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
CVE-2024-41932
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2024-41932
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "8f9ea86fdf99b81458cc21fc1c591fcd4a0fa1f4",
"lessThan": "d35130036d327b6c175d95db9ea8d64e1abd4a1b",
"versionType": "git"
},
{
"status": "affected",
"version": "8f9ea86fdf99b81458cc21fc1c591fcd4a0fa1f4",
"lessThan": "5c3fb75f538cfcb886f6dfeb497d99fc2f263ee6",
"versionType": "git"
},
{
"status": "affected",
"version": "8f9ea86fdf99b81458cc21fc1c591fcd4a0fa1f4",
"lessThan": "70ee7947a29029736a1a06c73a48ff37674a851b",
"versionType": "git"
}
],
"programFiles": [
"kernel/sched/syscalls.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.2"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.2",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.160",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.5",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.13",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"kernel/sched/syscalls.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2024-41932
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #45887 · Revision 1
- Added to Heist Feed
- Publisher date