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Copy Fail [1]
Copy Fail 2: Electric Boogaloo [2]
Dirty Frag [3]
And now this...
[1]: https://copy.fail
[2]: https://github.com/0xdeadbeefnetwork/Copy_Fail2-Electric_Boo...
[3]: https://github.com/V4bel/dirtyfrag
But still might be an open threat. On the email thread Jens seems to think that this is already patched and in stable, he also points out that for this exploit to work (as written in the article) you already need escalated privileges [2] Catchy title though.
[1] https://snailsploit.com/security-research/general/io-uring-z...
[2] https://seclists.org/oss-sec/2026/q2/448
static markdown version: https://raw.githubusercontent.com/ze3tar/ze3tar.github.io/9d...
Slowly at first, and then suddenly. AI assisted anything follows this trend. As capabilities improve, new avenues become "good enough" to automate. Today is security.
Agents are capable of finding this kind of stuff now and people are having a field day using them to find high-profile CVEs for fun or profit.
1. Pick a file to seed as a starting place.
2. Ask the LLM (in an agent harness) to find a vulnerability by starting there.
3. If it claims to have found something, ask another one to create an exploit/verify it/prove it or whatever.
4. If both conclude there is a vuln, then with the latest models you almost certainly found something real.
Just run it against every file in a repo, or select a subset, or have an LLM select files with a simple "what X files look likely to have vulns?".
So basically yes, it is that simple. It's just a matter of having the money to pay for the tokens.
Am I reading this wrong or is this just a way of executing an arbitrary binary with uid=0 if you have both CAP_NET_ADMIN and CAP_SYS_ADMIN?
If you can write modprobe_path, is it really news that you can find a way to execute code?
Almost all distros allow unprivileged user namespaces, and in my opinion this is the right decision, because they're important for browser sandboxing which I think is more important than LPEs.
This seems on the low impact end of the numerous historical io_uring issues.
Interesting and important all the same.
The title looks like clickbait to me.
[^0]: https://www.openwall.com/lists/oss-security/2026/05/08/10
[^1]: https://www.openwall.com/lists/oss-security/2026/05/08/14
https://clang.llvm.org/docs/BoundsSafety.html
Joke aside, we'll see more CVEs in the coming months, and in a sense that's good: it leaves less maneuvering room for bad actors (especially those selling them to the highest bidder).
Can we make sandboxing the new default now? Flatpak does a good job, but we're still pretty far away for apt/yum/pacman installed packages. AppArmor was a decent step forward, but clearly not enough.
Linux is falling apart faster than it can assign these CVEs.
Given Windows' absurd amount of backwards compatibility, chances are pretty high that there are a lot of sleeping dragons buried inside even modern Windows 10/11 kernel and userland that date back to code and issues from the 90s - code where half the people who have worked on it probably not just have departed Microsoft but departed living in the meantime.