CVE-2024-26686
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2024-26686
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2024-26686.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2024-26686
- Downstream
- Related
- Published
- 2024-04-03T15:15:52Z
- Modified
- 2025-08-09T20:01:25Z
- Severity
-
- 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- [none]
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
fs/proc: dotaskstat: use sig->stats_lock to gather the threads/children stats
locktasksighand() can trigger a hard lockup. If NRCPUS threads call dotaskstat() at the same time and the process has NRTHREADS, it will spin with irqs disabled O(NRCPUS * NRTHREADS) time.
Change dotaskstat() to use sig->stats_lock to gather the statistics outside of ->siglock protected section, in the likely case this code will run lockless.
- References
-
- https://git.kernel.org/stable/c/27978243f165b44e342f28f449b91327944ea071
- https://git.kernel.org/stable/c/3820b0fac7732a653bcc6f6ac20c1d72e697f8f6
- https://git.kernel.org/stable/c/7601df8031fd67310af891897ef6cc0df4209305
- https://git.kernel.org/stable/c/cf4b8c39b9a0bd81c47afc7ef62914a62dd5ec4d
- https://git.kernel.org/stable/c/0c35d1914353799c54fa1843fe7dea6fcbcdbac5
- https://git.kernel.org/stable/c/4fe85bdaabd63f8f8579b24a10ed597c9c482164