Vulnerability-Lookup

GHSA-R78Q-C787-RF79

Vulnerability from github – Published: 2025-01-11 15:30 – Updated: 2025-10-15 21:31

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

Severity

5.5 (Medium)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2024-41932"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-01-11T13:15:20Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nsched: fix warning in sched_setaffinity\n\nCommit 8f9ea86fdf99b added some logic to sched_setaffinity that included\na WARN when a per-task affinity assignment races with a cpuset update.\n\nSpecifically, we can have a race where a cpuset update results in the\ntask affinity no longer being a subset of the cpuset. That\u0027s fine; we\nhave a fallback to instead use the cpuset mask. However, we have a WARN\nset up that will trigger if the cpuset mask has no overlap at all with\nthe requested task affinity. This shouldn\u0027t be a warning condition; its\ntrivial to create this condition.\n\nReproduced the warning by the following setup:\n\n- $PID inside a cpuset cgroup\n- another thread repeatedly switching the cpuset cpus from 1-2 to just 1\n- another thread repeatedly setting the $PID affinity (via taskset) to 2",
  "id": "GHSA-r78q-c787-rf79",
  "modified": "2025-10-15T21:31:37Z",
  "published": "2025-01-11T15:30:27Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-41932"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5c3fb75f538cfcb886f6dfeb497d99fc2f263ee6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/70ee7947a29029736a1a06c73a48ff37674a851b"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2024-41932 (GCVE-0-2024-41932)

Vulnerability from cvelistv5 – Published: 2025-01-11 12:25 – Updated: 2026-05-11 20:26

Title

sched: fix warning in sched_setaffinity

Summary

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

Severity

No CVSS data available.

Assigner

Linux CNA under the mitre root

CNA scorecard D 53/100 over 6996 records in the last 180 days details

References

2 references

URL	Tags
https://git.kernel.org/stable/c/5c3fb75f538cfcb88…
https://git.kernel.org/stable/c/70ee7947a29029736…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 8f9ea86fdf99b81458cc21fc1c591fcd4a0fa1f4 , < 5c3fb75f538cfcb886f6dfeb497d99fc2f263ee6 (git) Affected: 8f9ea86fdf99b81458cc21fc1c591fcd4a0fa1f4 , < 70ee7947a29029736a1a06c73a48ff37674a851b (git)
Linux	Linux	Affected: 6.2 Unaffected: 0 , < 6.2 (semver) Unaffected: 6.12.5 , ≤ 6.12.* (semver) Unaffected: 6.13 , ≤ * (original_commit_for_fix)

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JSON

To clipboard

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          "programFiles": [
            "kernel/sched/syscalls.c"
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          "vendor": "Linux",
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      "cpeApplicability": [
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsched: fix warning in sched_setaffinity\n\nCommit 8f9ea86fdf99b added some logic to sched_setaffinity that included\na WARN when a per-task affinity assignment races with a cpuset update.\n\nSpecifically, we can have a race where a cpuset update results in the\ntask affinity no longer being a subset of the cpuset. That\u0027s fine; we\nhave a fallback to instead use the cpuset mask. However, we have a WARN\nset up that will trigger if the cpuset mask has no overlap at all with\nthe requested task affinity. This shouldn\u0027t be a warning condition; its\ntrivial to create this condition.\n\nReproduced the warning by the following setup:\n\n- $PID inside a cpuset cgroup\n- another thread repeatedly switching the cpuset cpus from 1-2 to just 1\n- another thread repeatedly setting the $PID affinity (via taskset) to 2"
        }
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      "providerMetadata": {
        "dateUpdated": "2026-05-11T20:26:13.072Z",
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    "dateReserved": "2025-01-09T09:51:32.405Z",
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    "state": "PUBLISHED"
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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
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