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.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-04-03 18:03 UTC
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 7033 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
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)
guessed Create a notification for this product.
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)
guessed Create a notification for this product.
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  }
}



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