CVE-2024-41932

Source
https://nvd.nist.gov/vuln/detail/CVE-2024-41932
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-41932.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2024-41932
Downstream
Related
Published
2025-01-11T13:15:20Z
Modified
2025-01-11T15:00:21Z
Summary
[none]
Details

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
References

Affected packages

Debian:13 / linux

Package

Name
linux
Purl
pkg:deb/debian/linux?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
6.12.5-1

Ecosystem specific

{
    "urgency": "not yet assigned"
}