CVE-2024-41932
sched: fix warning in sched_setaffinity
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sched: fix warning in sched_setaffinity
In the Linux kernel, the following vulnerability has been resolved: sched: fix warning in sched_setaffinity Commit 8f9ea86fdf99b added some logic to sched_setaffinity that included a WARN when a per-task affinity assignment races with a cpuset update. Specifically, we can have a race where a cpuset update results in the task affinity no longer being a subset of the cpuset. That's fine; we have a fallback to instead use the cpuset mask. However, we have a WARN set up that will trigger if the cpuset mask has no overlap at all with the requested task affinity. This shouldn't be a warning condition; its trivial to create this condition. Reproduced the warning by the following setup: - $PID inside a cpuset cgroup - another thread repeatedly switching the cpuset cpus from 1-2 to just 1 - another thread repeatedly setting the $PID affinity (via taskset) to 2
Reserved 2025-01-09 | Published 2025-01-11 | Updated 2025-01-11 | Assigner Linuxgit.kernel.org/...c/5c3fb75f538cfcb886f6dfeb497d99fc2f263ee6
git.kernel.org/...c/70ee7947a29029736a1a06c73a48ff37674a851b
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