Desktops (Apple)

Vulnerability Giving Attackers Full Control of Macs Is Under Active Exploitation (arstechnica.com) 26

joshuark shares a report from Ars Technica: Dutch officials have warned that a high-severity macOS vulnerability that allows attackers to execute malicious code is under active exploitation. "The NCSC has received a notification indicating that active abuse of this vulnerability has been observed on multiple systems on which port 5900 was accessible from the Internet," the Netherlands National Cyber Security Centrum warned earlier this week. "In all these cases, root had been accessed on the affected system and a Monero crypto miner had been placed."

The vulnerability, tracked as CVE-2026-65400, received a patch from Apple last week for macOS Tahoe, Sequoia, and Sonoma. The vulnerability, with a severity rating of 7.1 out of 10, stems from a bug in the macOS screen sharing capability, which allows a remote party to view the screen and control the keyboard and mouse while a machine is turned on. A flaw in the "state management," which keeps track of preceding events, user interactions, variables, and other system states, is the underlying cause. A video of the exploit in action can be found here. Details of CVE-2026-65400 became public at last week's Black Hat security conference. Apple said last week that CVE-2026-65400 "may" allow an attacker without credentials to gain access to a Mac. It's unclear why Apple hedged, but softening language is common among most tech developers when disclosing vulnerabilities.

As noted by the NCSC, the vulnerability is being exploited when port 5900 is exposed to the Internet. When screen sharing is turned on, the macOS firewall opens the port. Routers and dedicated firewalls generally block the port unless configured to override that setting. Security practitioners generally advise Mac users to keep the port closed even when using screen sharing and to instead connect over a VPN or through SSH tunneling. The alternatives require actions that aren't within the capabilities of most users. The safest practice is to block screen sharing, enable it only when screen sharing is needed, and to turn the feature off once a session has ended. Screen sharing can be turned on or off by accessing System Settings > General > Sharing and toggling the switch for Screen Sharing. Of course, installing last week's security update is also a must. Sharing is not caring.

Bug

A Zoom Screen-Sharing Bug Let Anyone Take Over Other Devices On a Call 12

An anonymous reader quotes a report from Wired: As AI models gain advanced capabilities to find vulnerabilities in software, develop ways to exploit them, and even carry out autonomous hacking sprees, researchers offered a sobering new example on Tuesday, disclosing vulnerabilities in the video conferencing platform Zoom that could have been exploited to take over targets' devices. Anyone on a call that involved screen sharing, whether participants or the host, would have been vulnerable to a silent attack that could be carried out with no indication and no interaction from the victim.

Researchers from the digital defense firm A Security say thebugwas discovered in early June using publicly available AI models, and that it took fewer than 20 prompts to uncover the vulnerabilities and create a working attack. Zoom issued a security advisory on Tuesday, including details about fixes the company has already begun rolling out to address the flaws, which affected devices running all operating systems that Zoom supports -- Windows, macOS, Linux, iOS, and Android.

The vulnerabilities were specifically in the protocol used to facilitate real-time annotation during screen sharing. The researchers say that their AI bug hunting systems specifically delved into this component because, like human bug hunters, they have been trained that convoluted and obscure functions often contain overlooked vulnerabilities. This is particularly true with proprietary, closed-source software. An established company like Zoom presumably does extensive code review and vetting on all components and functions, but without the benefit of public, open review, esoteric yet complex features like annotation are more likely to contain mistakes. The bugs are now patched, with Zoom issuing both server and client-side fixes—or patches for both Zoom's own servers and the applications that run on customer devices. But the researchers emphasize that it was alarming to contemplate bugs that could have been exploited to take over a target device simply by getting someone onto a Zoom call.
"What is interesting for us and what we believe is dangerous is the democratization of these capabilities -- the barrier to entry is dropping rapidly," A Security cofounder Omer Gull told WIRED ahead of the disclosure. "Before it would have taken a team of five people maybe six months with a lot of refining and iteration to find this. Now people can reach the same results with under 20 prompts. And Zoom is an important type of target because people assume trust when using it. They don't see it as a threat."
AI

AI Reviews Bring 'New Normal' to Linux Release Candidates: Lots of Bug Fixes (phoronix.com) 65

Linux Torvalds expects Linux 7.2 should be released next weekend "unless something really bad pops up," Torvalds said while announcing today's release candidate.

But there's something interesting about Linux 7.2-rc7, writes Phoronix. "By the time the Linux kernel typically hits a -rc7 release things have usually settled quite well. But in today's world of AI/LLM coding/review agents, the kernel activity continues at an all-time high." Tons of bug fixes continued to trickle in across the kernel spectrum for all sorts of issues. The HWMON hardware monitoring subsystem saw several critical and high severity bug fixes, on the memory management side was a nasty race condition leading to a use-after-free in the kernel for the past eight years, Btrfs restored its fixup worker infrastructure to deal with silent data loss, lots of AI patches in the networking realm, and the kernel was patched for the Safe RET Interrupt Vulnerability.

Linus Torvalds wrote in the 7.2-rc7 announcement:


"Another week, another -rc.

I can't say that I'm exactly thrilled about the size of this all, but it is what it is: the new normal with a lot of fixes, many of them due to review by various AI tools.

And nothing looks particularly scary per se — it's just that there's a lot here. Most of it is fairly small, although we have a couple of larger diffs: s390/zcrypt fixes stand out in the diffstat, and so does btrfs bringing back the fixup worker infrastructure. And some netfilter ipset fixes.

But aside from a few places like that, most of this is just lots of tiny fixes. It's pretty much spread all over — drivers (gpu, sound, networking, you name it), filesystems, core networking, arch code...

Privacy

Framework Notifies 'All Customers' of a Data Breach Via Compromised Metabase BI Service (techcrunch.com) 7

"Framework has been sending out email notifications to customers alerting of a limited data breach in which customer information was accessed through a Metabase BI service zero-day exploit," writes Slashdot reader DuoDreamer. Data includes customer names, email addresses, phone numbers, and physical addresses. "Framework is investigating whether or not this included Framework for Business customers as well." TechCrunch reports: Framework's spokesperson Eric Schumacher told TechCrunch that the breach affected "all customers," but declined to specify a specific number. Framework computers are relatively niche products, but some estimates say the company sold hundreds of thousands of devices.

Metabase disclosed its own breach in a blog post on its official website, where it said that it was hacked by someone using an unknown security flaw, a so-called zero-day. The company said the hackers exploited the bug to give them the ability to access customers' databases stored on Metabase's cloud servers.

In its email to customers, Framework also included the email Metabase sent to the company, which says hackers accessed Framework's cloud instance. The computer maker said it investigated the incident and found that hackers had stolen its customers' personal data, but did not include their payment information.

Bug

Apple Limits Bug Bounty Submissions After Flood of AI Slop 29

Apple has capped the number of open bug-bounty reports researchers can submit after being flooded with low-quality and sometimes entirely fabricated vulnerabilities generated by AI. MacRumors reports: The Financial Times learned of the limit after cybersecurity startup Bynario used ChatGPT to locate more than 50 macOS bugs in three weeks. Bynario found a privilege escalation exploit that could let an attacker get unrestricted access to a Mac, but was unable to report it because Apple limited the number of bug reports Bynario could submit. Bynario sent eight reports to Apple in 2025, and another five in 2026 before hitting a restriction.

Bynario's founder said it is a "very difficult time in the industry" because companies are being "flooded by the sheer amount of bugs." Apple has since been in contact with Bynario and is reviewing the company's submissions. While Apple now has a cap on the number of open submissions a researcher can have, researchers can request an increase to make sure Apple's security team doesn't miss a critical vulnerability.
Apple

Apple's iCloud File Sharing Left Ex-Employees With Access to Secret Documents (macrumors.com) 80

Apple's practice of mixing employees' work files with personal iCloud accounts reportedly left some former staff with continued access to confidential documents, messages, and even new updates after leaving the company. "The former employees said many Apple files they had been shared on over their careers at the company -- including planning documents for product launch events -- continued to sync to their personal devices through the iCloud storage service after they left Apple," reports The Information. "In some cases, they even received notifications about fresh updates to the documents. Some former employees said they were petrified to delete the files for fear that doing so would attract Apple's attention." MacRumors reports: Apple files get mixed in with employees' accounts because the company encourages them to use their personal Apple Accounts with their work iCloud account. Employees are given a 2TB iCloud plan and are able to merge the storage with their existing Apple Account or create a new account. Since only one primary account can be signed in at a time, most opt to use their existing account to avoid having to carry two iPhones. Apple has a managed folder for workplace files that it revokes access to when an employee leaves, but some internal documents aren't saved there automatically and shared files end up mixed in with personal content. Employees can also retain access to iMessage chats and files shared via the Messages app.

Lingering access to Apple systems is central to Apple's lawsuit against OpenAI. In its filing, Apple alleged that former employee Chang Liu breached Apple's systems using a "rare, previously unknown authentication bug" to download files while he was working at OpenAI. Apple told The Information that the OpenAI lawsuit is unrelated to any files left available on iCloud and that it does not pursue legal claims against former employees who accidentally have Apple documents in their personal iCloud accounts. "This case is about OpenAI employees wrongfully taking Apple's secret and confidential information regarding our unreleased technologies, processes, and products. Nothing in the filing relates to documents shared by, or stored in, iCloud."

Wine

Wine 11.14 Released 6

Wine 11.14 is out with initial WoW64 mode support on FreeBSD, allowing 32-bit Windows applications to run on a 64-bit system without relying on 32-bit multilib support. The release also adds Start Menu icon support in Wine Explorer, 7.1 format conversions in DirectSound, AES-GMAC support in BCrypt, and 21 bug fixes affecting apps and games including Adobe Reader, Heroes of the Storm, and Age of Empires I and II. Additional details can be found at WineHQ.org.
AI

Linux Kernel Team Publishes 432 CVEs In Two Days 92

Ancient Slashdot reader alanw shares a post from the OSS Security mailing list, where sysadmin Jan Schaumann wonders what to do after the Linux kernel cranked out 432 CVEs in a little over 24 hours: "I understand the position that CVEs were always a flawed way to track or prioritize security changes... But this onslaught really shows it's not feasible to attempt to prioritize individual kernel changes. I'm not sure what to do here going forward." The Register reports: The nixCraft team speculated on social media that AI bug reports are a likely reason for all those kernel CVEs, which wouldn't be without precedent - Linus Torvalds himself said in May that the Linux kernel security mailing list had become "almost entirely unmanageable" due to AI-assisted bug hunting. Nonetheless, Torvalds has described AI as a useful tool for Linux development while still noting it can be a drag for maintainers, both from a workload standpoint and the fact "it keeps finding embarrassing bugs." [...]

Unfortunately for Linux sysadmins, the position in which they find themselves in this current mess isn't one that's readily solved. CVEs might be a messy way to track and prioritize security updates, especially when hundreds of them are published over a short period, but without something better, it falls to IT and security teams to determine which vulnerabilities affect their systems and which kernel updates they need to deploy.
Senior kernel maintainer Greg Kroah-Hartman replied to Jan's post, pushing back on the idea that the kernel's CVE volume is uniquely unmanageable. The kernel isn't special, he argues -- companies everywhere are finally realizing they need to re-evaluate how they update all of their systems and devices, something that's traditionally been "woefully ignored."

On the "just always update" approach, Greg says that's precisely what the kernel community endorses: "This is what the kernel developer community recommends and supports. If you want support from us, do this." Can't manage it yourself? Pay a company for support, or "just use Debian or Yocto as their security practices are amazing." He points to Android as proof the approach scales, calling it "the largest deployment of software in the world" -- billions of devices kept updated "with one very-overworked developer guiding it all."

As for reviewing every CVE individually, he notes this can be largely automated by intersecting the files a CVE touches with the files you actually build, which typically trims the relevant set "down to about 10% of the overall total" -- the approach enterprise distros already take for their customers. Panic-mode selective patching gets a blunt "Good luck with that!" -- regulations like the EU's Cyber Resilience Act are set to legislate that habit away ("rightfully so," in his view), and "your insurance company might wish to have a talk with you as well."

Greg also warns the flood isn't over: "The number of llm-found issues is only on the rise right now, it's going to be a very long 18 months at the least to dig ourselves out of this mess, and people had BETTER be updating their systems all along the way if they expect to be secure in any way." As for the 432-CVE burst itself, he explains it was simply him catching up on a weeks-old, publicly visible review queue over the weekend -- delayed by "a perfect storm of 6 weeks straight of conferences and vacations" -- so it shouldn't have come as a surprise to anyone watching the public git repo.
Security

Hackers Are Exploiting Recently Patched WordPress Bugs, Putting Millions of Websites at Risk (techcrunch.com) 24

An anonymous reader quotes a report from TechCrunch: Hackers are breaking into websites that run vulnerable versions of the popular blogging software WordPress, according to several cybersecurity firms. One estimate puts the number of vulnerable WordPress websites at tens of millions as of Monday. Last week, WordPress patched two critical security flaws, urging people who run its software on their websites to update it "immediately." The vulnerabilities are so severe that WordPress enabled forced updates where possible. Since then, cybersecurity companies Patchstack, Hexastrike, and WatchTowr have all warned that hackers are exploiting the vulnerabilities in the wild, meaning they are taking over websites that are still running susceptible versions of WordPress.

It's unclear how many WordPress-powered websites on the internet are at risk, but it's possible to make some educated guesses. The vulnerable versions of WordPress are 6.9.0 through 6.9.4, and 7.0.0 to 7.0.1. According to WordPress' official stats, there are more than 400 million websites that run those flawed versions, although these statistics likely don't reflect websites that have recently been patched. Cybersecurity consultant Daniel Card, who told TechCrunch that he looked at a sample of around 3,500 WordPress websites, estimates that less than 15% are vulnerable. Applying Card's projection across the total population of WordPress websites on the internet, the total figure would still be around 90 million. [...] One of the critical WordPress bugs was found and reported by Adam Kues of cybersecurity firm Searchlight Cyber, which dubbed it WP2Shell. Paired with the other bug, hackers can take full remote control of vulnerable websites.

Twitter

'Grok Build' Coding Tool Open Sourced This Week, Promises to Respect Zero Data Retention (theregister.com) 41

Elon Musk confirmed SpaceX has open sourced the Grok Build CLI this week, reports The Register, "just days after researchers caught the AI tool scooping up users' entire repositories and uploading them to company-controlled cloud storage."

That discovery had "gathered so much negative attention that Elon Musk felt compelled to issue a public statement alongside SpaceX, and its technical staff, promising to delete all data that Grok Build has ever stored and give users more choice over how their data is handled." SpaceXAI's data grab was first publicized Sunday [July 12] by Cereblab, who probed Grok Build traffic and found that repos were being packaged up as Git Bundles and beamed to Google Cloud storage... [Elon Musk] said SpaceX would open-source Grok Build to sow greater trust in the product, after the codebase was audited for security vulnerabilities... ["Open-sourcing Grok Build allows anyone to support making a reliable and robust harness," SpaceX posted on X.com. "Check out our code, including the Git repo for the Grok Build CLI."]

In a separate statement accompanying the open source announcement, SpaceX said it has always respected Zero Data Retention (ZDR), which was applied to enterprise customers by default, and acknowledged that data retention was enabled by default for everyone else, which has now been corrected. It said: "In response to user questions about privacy: Since launch, Grok Build has fully respected zero data retention (ZDR). All users have always had the ability to disable data upload in the CLI. When data upload was disabled, this choice was respected. In the early beta, data retention was enabled by default for non-ZDR users. Based on your feedback, we changed this. We are now going further to protect privacy. With all retained data deleted, retention default off, and an open-source harness, we are offering complete user privacy. You can also run Grok Build fully open-sourced and local-first with your own inference.

"We disabled default retention for all Grok Build users starting on July 12th. Additionally, we are deleting all coding data that was previously retained, ensuring every user's preferences are respected. With these steps, Grok Build goes beyond other major coding products to protect user privacy."

SpaceX also invited researchers to probe Grok Build for security issues and report them to its bug bounty program, which offers rewards ranging from $100-$20,000, depending on the severity.

The article notes Simon Willison, creator of Datasette and co-creator of Django, wrote this week that the Grok Build codebase comprises 844,530 lines of Rust code. "There are still remnants of the code that used to upload everything to Google Cloud," Willison writes, "but they seem to have been disabled now."

Elon Musk also posted Wednesday that "Once we have completed our review for security vulnerabilities, we will make the entire codebase of X open source, with no exceptions. Moreover, we will invite third party reviewers to examine the system that is running to confirm that the open source code is what is running."
Bug

Billing Software Error Sends Billion-Dollar AWS Estimates (theregister.com) 38

AWS says a billing software bug caused some customers to see wildly inflated estimated charges, including reports of accounts showing bills in the billions or even trillions of dollars. The Register reports: An open issue on the AWS Health Dashboard (archived copy at the time of writing) popped up at 1:33 am Pacific time on Friday informing users that Cost Explorer was "reflecting inaccurate estimated billing data." As of writing, the issue is still unresolved despite AWS trying several different things to get it fixed. The company apparently identified the root cause within an hour and a half of beginning its investigation, only describing it as "an issue with unit pricing within the estimated billing computation subsystem."

AWS followed up by pausing estimated bill updates, saying customers would continue to see the inflated figures already displayed, but that those estimates would not increase further. "The displayed billing estimates do not reflect actual usage and charges," AWS explained, noting that customers don't need to take any action, like, we imagine, flooding the help portal with tickets telling them what they already know, for instance.

"Once the issue has been mitigated, we expect full resolution to take multiple hours as we work through recomputing the estimated billing data," AWS added. After we first published this article, Amazon updated the issue page to indicate that it had identified the root cause and mitigated the underlying issue. The company says that it's begun backfilling data in the Cost Management Console to correct billing numbers, and that all customers should see corrected amounts by Saturday, July 18 at noon pacific time.

AI

Linus Torvalds To Critics of AI Coding On Linux: 'Fork It. Or Just Walk Away.' (arstechnica.com) 92

Linus Torvalds says the Linux kernel will not ban AI-assisted coding tools, and if anti-AI absolutists have a problem with that, they can "fork it" or "walk away." An anonymous reader quotes a report from Ars Technica: Writing in a lengthy post on the Linux kernel mailing list this week, Torvalds said that "Linux is not one of those anti-AI projects, and if somebody has issues with that, they can do the open-source thing and fork it. Or just walk away." The statement came amid a lengthy thread arguing about the use of Sashiko, an "agentic Linux kernel code review system" that its creators claim can, in tests, independently find 53.6 percent of the bugs that would end up being fixed by human coders in later commits. But the tool can also waste maintainers' time by sending "false positive" reports of bugs that don't exist, at a rate Sashiko's maintainers estimate is "well within [the] 20% range."

In discussing whether maintainers should be subjected to a flood of these kinds of automated, AI-powered bug report emails (true or false), one poster cited the Software Freedom Conservancy's recent statement that the open source community "should support, not just tolerate, those who outright reject LLM-gen-AI systems" and that "every FOSS contributor deserves self-determination regarding LLM-gen-AI." In the face of that statement, Torvalds said that he rejects those who demand that their open source projects not accept any LLM-generated code or revisions. "We're not forcing anybody to use [LLM tools], but I will very loudly ignore people who try to argue against other people from using it," Torvalds said.

Torvalds said his position on this is a pragmatic one that's "based on technical merit. Not fear of new tools." And when it comes to utility, Torvalds said that "AI is a tool, just like other tools we use. And it's clearly a useful one. It may not have been that 'clearly' even just a year ago, but it's no longer in question today. Anybody who doubts that clearly hasn't actually used it." [...] While Torvalds acknowledged that "AI isn't perfect," he urged detractors to compare the output of these tools to the performance of human code maintainers. "Anybody who points to the problems at AI had better be looking in the mirror and pointing at themselves at the same time," Torvalds wrote. "Because it's not like natural intelligence is always all that great either."

Windows

Microsoft Patches a Record 570 Security Flaws (krebsonsecurity.com) 77

An anonymous reader quotes a report from Krebs on Security: Microsoft today released software updates to plug at least 570 security holes in its Windows operating systems and other software, almost triple the number of vulnerabilities the software giant fixed in its record-smashing Patch Tuesday release last month. Microsoft attributed the burgeoning patch counts to vulnerability discoveries aided by artificial intelligence. Nearly 60 of the bugs quashed in July's Patch Tuesday earned a "critical" severity rating, meaning miscreants or malware could use them to seize remote control over a Windows device with little or no help from the user. Microsoft also addressed three zero-day flaws, including two that are already being exploited in the wild.

Two of the zero-day weaknesses allow an attacker to elevate their user rights on a Windows system, as do approximately 250 other elevation of privilege flaws fixed this month; they include CVE-2026-56155 - an Active Directory Federation Services bug -- and CVE-2026-56164, a Microsoft Sharepoint vulnerability. CVE-2026-50661 is a security feature bypass in Windows BitLocker that could allow attackers to gain access to encrypted data if they have physical access to the device. Microsoft said this bug has been detailed publicly, but that it is not aware of any active exploitation.

In a blog post on July 9, Microsoft Executive Vice President Pavan Davuluri wrote that Windows users will notice "a higher volume of security updates included in each security release" as a result of AI aiding in the discovery of vulnerabilities. "The pace of vulnerability discovery is changing with advances in AI making it possible to find more issues, faster, across more code, with new mechanisms that can accelerate both discovery and analysis," Davuluri wrote.

AI

Linus Torvalds on AI, Junk Patches, Humans, and Godzilla (zdnet.com) 19

Linus Torvalds once said LLMs might bring a 10X increase to programmer productivity. But speaking at Open Source Summit India 2026, he now says that number was "not scientific," reports ZDNet. "That was pulled out of my ass number, obviously." Today, he continued, "we're at the point where hopefully it creates more productivity than it takes away," but "we certainly saw more junk being generated by LLMs than we saw useful code up until the like early this year.... it can actually be a huge drain on resources when it takes humans a lot of effort to figure out that, hey, this machine-generated report was not true." Even now, he said, "most of the good ones require more than just the LLM," because "we've had to push back quite a bit... if you find a bug with an LLM, it's not enough to just ask the LLM to make a bug report and then throw it over the fence to us. We want to see a suggested patch; we want to see the human who ran the LLM act as a kind of back-and-forth."

Torvalds described many AI-generated patches as "mindless band-aid kind of patches... they may fix the immediate problem, but the kind of bug remains, and it just is waiting in the hallway to hit you in another place." For his own toy projects, he uses LLMs as prototypers: "I use them as a way to prototype things... quite often the code is not usable in that form, but it's a great way to try something out," while insisting that for kernel-level fixes, "LLMs, in my experience, have not been at that level yet."

Torvalds acknowledged that some AI-found issues have been "absolutely, stunningly, I mean, interesting in a painful kind of way," especially security problems that "show up in the technology press two days later." Despite the embarrassment, he said, "I'm very much not a shoot-the-messenger kind of person. I think we're much better off with LLMs finding bugs, even when they are embarrassing, and they are things that we should probably have found two decades ago."

Torvalds also said he's using AI "for my own toy projects... Every time I travel to some new place, and this is the first time I've been to India, I send the kids pictures of where I am, and for some strange reason, Godzilla seems to follow me around and gets added to those pictures."

ZDNet notes that Torvalds concluded, "There are many useful and less useful uses for AI," and "I think Godzilla is a great place to stop."

Thanks to Slashdot reader joshuark for sharing the article.
China

China's AI Matches Anthropic in Cybersecurity, Causing Worry Over US Restrictions (msn.com) 57

Chinese AI systems "have matched the performance of Anthropic's powerful model Mythos in some cybersecurity scenarios," reports the Wall Street Journal.

They call it "a development poised to reset the global tech race and pressure the White House in its overhaul of U.S. AI policy." Security researchers said that a new AI model, released this month by China's Zhipu AI, also known as Z.ai, can match the latest U.S. models when it comes to finding security bugs, although it still lags behind Anthropic's and OpenAI's products in other tasks. Overall, the capability gap between top U.S. models and those built by Chinese companies has narrowed significantly, and use of Chinese AI systems has surged as businesses seek to rein in runaway costs. A host of companies, including Microsoft, are weighing how they can offer Chinese models on their platforms, a development that is set to alter the balance of power among tech companies...

Unlike models from Anthropic or OpenAI, Zhipu's GLM-5.2 is open-weight. That means it can be downloaded and run on hardware operated by anybody and can be modified and used without supervision. Open-weight models are ideal for users who want unfettered access to systems they control, but they are also ideal for hackers, who can run them in the shadows. GLM-5.2 has ranked as one of the 10 most-used AI models, according to data from OpenRouter, a company that provides access to more than 400 AI models. In some benchmarking tests, according to the cybersecurity company Semgrep, GLM-5.2 bested Anthropic's Claude Opus 4.8 model, which was released in May. When given further instructions, Opus 4.8 and GLM-5.2 can match Mythos in bug-finding ability, according to researchers...

"Banning Fable while selling chips China needs to develop its own version is a gift to China," said Saif Khan, a distinguished technology fellow at the Institute for Progress think tank who worked on export restrictions in the Biden administration. The U.S. needs to maximize the use of Mythos and comparable models to harden its cyber defenses while it can, he added. Among the Mythos 5 and Fable 5 users that had lost access before Friday's decision to restore Mythos 5 access for some trusted entities: the National Security Agency, which had been testing the tools and found them impressive in trials, according to people familiar with the matter... "It is incentivizing companies across the globe to use cheaper but very capable Chinese open-weight models, while at the same time undermining the U.S. AI industry," said Niels Provos, a researcher who led security teams at Google and Stripe. "I don't understand it."

Thanks to long-time Slashdot reader schwit1 for sharing the article.
Security

29-Year-Old Squid Proxy Bug 'Squidbleed' Can Leak Cleartext HTTP Requests (thehackernews.com) 19

A 29-year-old bug in the Squid web proxy, dubbed Squidbleed and tracked as CVE-2026-47729, can let an authorized proxy user retrieve fragments of another user's cleartext HTTP requests, including credentials and session tokens. The security researcher who reported the flaw credited Anthropic's Claude Mythos Preview for the discovery. The Hacker News reports: Squid describes this as an attack by a trusted client: someone already permitted to use the proxy, not any random host on the internet. That matches Squid's usual home, shared networks like schools, offices, and public Wi-Fi. In those setups, the attacker is just another user of the same proxy. The leak also only reaches traffic that Squid can read. Normal HTTPS rides an opaque CONNECT tunnel, so Squid never sees inside it; the exposed traffic is cleartext HTTP, plus TLS-terminating setups where Squid decrypts and inspects. The attacker also needs the proxy to reach an FTP server they control on port 21. Both FTP and that port are on by default.

[...] If you patch, verify the fix, not just the version. Confirm the guard is in FtpGateway.cc, or check your distribution's backport, since distros ship their own builds (Debian packages Squid 5.7). The public thread is still inconsistent: maintainer Amos Jeffries first said Squid 7.6 carried the fix, then corrected that to 7.7, and on June 22 Debian's Salvatore Bonaccorso noted the referenced commit looks like it is already in 7.6. The fix is small, a null-terminator check before the vulnerable strchr calls, merged to the development branch in April and v7 in May. Squid 7.6 does separately patch CVE-2026-50012, an unrelated cache_digest heap overflow.

The cleaner move is the one the researchers recommend anyway: turn FTP off. Chromium dropped FTP years ago, and most networks carry almost none of it, so disabling it removes this attack surface for free, whatever build you run. The risk is real but bounded. SUSE rates it moderate, CVSS 6.5, and the vector explains the score: the attacker needs proxy access (low privileges), and the only impact is confidentiality, nothing on integrity or availability.

Bug

Microsoft Accidentally Breaks Replying To an Email On Outlook (theregister.com) 70

Microsoft has accidentally introduced a bug in Outlook for Mac that omits the original message from email replies, making it difficult for recipients to follow conversation history. Until Microsoft releases a fix, its suggested workaround is to roll back from version 16.110 and disable automatic updates, which is "great for users in full control of their devices -- not so good for anyone with a managed device," notes The Register. "Administrators with fleets of Macs running Outlook should brace for helpdesk tickets." From the report: In some instances, having a user copy and paste the salient bits of the email they are responding to might not be such a bad thing. We've all had emails that required epic amounts of scrolling to find what started the conversation, so forcing users to think about what they actually need to include is no bad thing. However, disrupting user workflows without warning -- well, that is undoubtedly a bad thing.

This is, after all, one of the most basic things an email client needs to do, so shipping a product with a bug that breaks this functionality says more about Microsoft's approach to quality than anything else.

Linux

After Six Years Of Work and Over 360 Patches, Linux 7.2 Finally Removes Bug-Prone strncpy (techtimes.com) 40

Tech Times reports: Linux 7.2's merge window closed out a cleanup campaign on Friday that most kernel developers had stopped expecting to see end: the complete removal of strncpy(), a C string-copy function that the kernel's own documentation labels "actively dangerous," from every subsystem, driver, and architecture-specific file in the kernel source tree.

The merge landed June 20, 2026. After around 362 commits spread across six years of incremental work, no call site using the function remained, and the function itself — including the last per-CPU-architecture optimized implementations — was struck from the source. The removal matters beyond housekeeping. strncpy() is a persistent source of a specific class of memory error: kernel buffers that contain sensitive data can leak bytes past an unterminated string boundary, a pattern that enables memory disclosure vulnerabilities. Eliminating the function from the tree removes that entire class from the kernel's attack surface — and, critically, makes strncpy() unavailable to any future contributor, turning a best-practice suggestion into an enforced policy.

Phoronix notes it's replaced by five different functions: In place of strncpy, Linux kernel code should use strscpy() for NUL terminated destinations, strscpy_pad() for NUl-terminated destinations with zero-padding, strtomem_pad() for non-NUL-terminated fixed-width fields, memcpy_and_pad() for bounded copies with explicit padding, or memcpy() for known-length memory copies.
"The reason five functions were needed," explains Tech Times, "is that different parts of the kernel were using strncpy() for five semantically distinct memory operations — each with a different intent, different termination requirement, and different padding behavior. " The original function obscured all of those differences under a single ambiguous name. The 362-commit campaign to replace it was, in effect, a codebase-wide audit that forced every call site to declare its actual intent in code That is an engineering outcome with lasting value: the kernel's string-handling semantics are now explicit where they were previously implicit, and future maintainers can read a function name and understand what a copy operation actually does.
Security

New Unpatchable Exploit Targets Apple Devices With A12 and A13 Chips (9to5mac.com) 39

Researchers have disclosed a new unpatchable BootROM exploit affecting Apple devices with A12, A13, S4, and S5 chips. The attack requires physical USB access and DFU mode, but can let an attacker run code before iOS loads, bypass signature checks, and boot modified software. 9to5Mac reports the details: In a highly detailed technical post published today, the Paradigm Shift Team details usbliter8, a new exploit that "leverages both a hardware bug in the USB controller and a specific configuration flaw present in the device firmware" and cannot be patched. The PS Team explains that ahead of today's disclosure, it shared its findings and worked with Apple Product Security to coordinate the release. The researchers also thanked Apple's security team for its "prompt response, constructive engagement, and cooperation throughout" the process.

In a nutshell, this bug affects the following Apple SoCs: A12, S4, S5, and A13. [...] They add that "technical support for A12X/Z is possible," but "it is not currently implemented." That could add the 2018 and 2020 iPad Pro lineups to the list. The way usbliter8 works is: it sends specially crafted data to a device over USB while it is in DFU mode, confusing the USB controller and causing it to write data to the wrong part of memory. That gives an attacker with physical access to the device control over its startup process. From there, they can run their own code before iOS loads, bypass signature checks, and boot modified system software.

Importantly, the exploit does not affect or compromise the device's Secure Enclave, which in practice means that data such as passcodes and encrypted user data remain secure. That said, PS Team says that "although usbliter8 doesn't affect SEP itself, it opens up wider attack vectors to compromise the Secure Enclave," adding that "by releasing this exploit publicly, we hope to highlight the real-world impact of these hardware flaws and contribute to a broader understanding of modern SecureROM security." [...] Given that this is also an unpatchable exploit, the researchers note that "affected users should be aware that migrating to newer hardware remains the most effective mitigation."

Bug

Google Told Researcher 'Nice Catch!' Then Denied Bug Bounty For Flaw It Still Hasn't Fixed (theregister.com) 38

Security researcher Justin O'Leary says Google initially accepted his Config Connector privilege-escalation report as a high-priority, high-severity bug, then denied a bounty by declaring the behavior "working as intended." According to The Register, a Google rep initially praised O'Leary's report with a "Nice catch!" before the cloud giant reversed course, declaring that no vulnerability existed and therefore no fix or reward was warranted. "The bug report, however, is still marked high-priority and accepted," the publication notes. The alleged flaw, dubbed ConfigConfusion, could let a Kubernetes namespace user exploit an overprivileged service account to become a GCP organization owner with only a few lines of YAML and little apparent audit visibility. O'Leary details the incident in a blog post. The Register reports: According to O'Leary, Config Connector doesn't perform an authorization check, and this allows any Config Connector service account with org-level permissions to bypass Identity and Access Management (IAM) authorization and gain the highest level of control (roles/owner) to an entire GCP Organization -- the root node of all of a company's resources within Google Cloud. On March 27, a Google security engineer accepted O'Leary's report and told him: "Nice catch!" The employee said that they filed a bug based on O'Leary's report with the relevant product team and assured him the Chocolate Factory's security squad would work with relevant Google Cloud people to fix the flaw. "We'll work with the product team to ensure this issue is address. We'll let you know when the issue was fixed," the engineer said. "In the meantime, review the payment option selected in your bughunters.google.com profile."

Google assigned the bug P1 priority and S1 severity, signifying a flaw worthy of urgent repair because it affects a large percentage of users and can disrupt core organizational functions. "I figured that was the end of that," O'Leary said in a phone interview with The Register. Eleven days later, on April 7, he received a new message from a Google Security Bot reversing the earlier decision. The Reg viewed the email, and O'Leary included a screenshot in his Thursday writeup. The message said that the Cloud Vulnerability Reward Program panel decided that the "security impact of this issue does not meet the criteria to qualify for a reward."

After reviewing the bug report, Google determined the software "is working as intended," the message continued. It also noted that the program's decision not to pay a bounty "does not mean that the product team won't fix the issue." Nearly three months later, the case remains P1/S1 with the status "in progress (accepted)." Google hasn't assigned a CVE or issued a fix. O'Leary didn't receive any reward for his research. [...] "This is a pattern," O'Leary told [The Register]. "This is just how these trillion-dollar companies deal with people like me. In my day job, we use GKE, and it's incredibly frustrating on my end, when I find a critical vulnerability in the system that's being widely used, and I can't even get the vendor to patch their own stuff."
A Google spokesperson told The Register: "The issue reported does not qualify for a reward because the GCP IAM authorization bypass is only exploitable if an attacker has access to a Config Connector Service Account that's been granted the Organization Admin role by the organization (i.e., it is privileged). Additionally, an attacker would first need to gain entry to an organization's environment (e.g., an exposed container) in order to leverage the privileged Config Connector instance and execute commands with administrative authority, such as the IAM bypass. Granting this level of access to the Config Connector Service Account goes against Google Cloud's publicly shared best practices and the principle of least privilege."

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