CVE-2024-41932: sched: fix warning in sched_setaffinity

First published: Sat Jan 11 2025(Updated: )

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

Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67

Never miss a vulnerability like this again

Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.

Read MoreStart Free Trial

• agent/severity
• agent/title
• agent/references
• agent/type
• agent/first-publish-date
• agent/description
• collector/nvd-api
• source/NVD
• agent/author
• agent/event
• agent/source
• collector/mitre-cve
• source/MITRE
• agent/last-modified-date
• agent/tags
• agent/softwarecombine
• agent/guess-ai
• agent/software-canonical-lookup