CVE-2024-26686 (GCVE-0-2024-26686)

Vulnerability from cvelistv5 – Published: 2024-04-03 14:54 – Updated: 2026-05-11 20:02
VLAI
Title
fs/proc: do_task_stat: use sig->stats_lock to gather the threads/children stats
Summary
In the Linux kernel, the following vulnerability has been resolved: fs/proc: do_task_stat: use sig->stats_lock to gather the threads/children stats lock_task_sighand() can trigger a hard lockup. If NR_CPUS threads call do_task_stat() at the same time and the process has NR_THREADS, it will spin with irqs disabled O(NR_CPUS * NR_THREADS) time. Change do_task_stat() to use sig->stats_lock to gather the statistics outside of ->siglock protected section, in the likely case this code will run lockless.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 4fe85bdaabd63f8f8579b24a10ed597c9c482164 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 0c35d1914353799c54fa1843fe7dea6fcbcdbac5 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < cf4b8c39b9a0bd81c47afc7ef62914a62dd5ec4d (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 3820b0fac7732a653bcc6f6ac20c1d72e697f8f6 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 27978243f165b44e342f28f449b91327944ea071 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 7601df8031fd67310af891897ef6cc0df4209305 (git)
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Linux Linux Affected: 2.6.12
Unaffected: 0 , < 2.6.12 (semver)
Unaffected: 5.10.237 , ≤ 5.10.* (semver)
Unaffected: 5.15.181 , ≤ 5.15.* (semver)
Unaffected: 6.1.82 , ≤ 6.1.* (semver)
Unaffected: 6.6.64 , ≤ 6.6.* (semver)
Unaffected: 6.7.6 , ≤ 6.7.* (semver)
Unaffected: 6.8 , ≤ * (original_commit_for_fix)
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      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


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Taxonomy of the tags.




Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.



Detection rules are retrieved from Rulezet.