CVE-2024-26686

CVE Details

Release Date:2024-04-03
Impact:Moderate What is this?

Description


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.

See more information about CVE-2024-26686 from MITRE CVE dictionary and NIST NVD


NOTE: The following CVSS metrics and score provided are preliminary and subject to review.


CVSS v3 metrics

Base Score: 5.5
Vector String: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Version: 3.1
Attack Vector: Local
Attack Complexity: Low
Privileges Required: Low
User Interaction: None
Scope: Unchanged
Confidentiality Impact: None
Integrity Impact: None
Availability Impact: High

Errata information


PlatformErrataRelease Date
Oracle Linux version 8 (kernel) ELSA-2024-51012024-08-08
Oracle Linux version 8 (kernel-uek) ELSA-2025-204702025-07-14
Oracle Linux version 9 (kernel) ELSA-2024-93152024-11-14
Oracle Linux version 9 (kernel-uek) ELSA-2025-204702025-07-14


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