CVE-2024-26686

fs/proc: do_task_stat: use sig->stats_lock to gather the threads/children stats

MEDIUM 5.5

En bref

Source
NVD
EPSS
EPSS 0.21 % · centile 12 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Modified

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.

Faiblesses (CWE)

Références

Scores

VersionScoreVecteurÉvalué par
CVSS 3.1MEDIUM 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HNVD · nvd@nist.gov (Primary)

Références européennes

Avis du CERT-FR

Configurations affectées (CPE NVD)

Produits affectés

ProduitVersions
Linux · Linuxaffected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 4fe85bdaabd63f8f8579b24a10ed597c9c482164 ; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 0c35d1914353799c54fa1843fe7dea6fcbcdbac5 ; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < cf4b8c39b9a0bd81c47afc7ef62914a62dd5ec4d ; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 3820b0fac7732a653bcc6f6ac20c1d72e697f8f6 ; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 27978243f165b44e342f28f449b91327944ea071 ; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 7601df8031fd67310af891897ef6cc0df4209305
Linux · Linuxaffected 2.6.12 ; unaffected 0 < 2.6.12 ; unaffected 5.10.237 ≤ 5.10.* ; unaffected 5.15.181 ≤ 5.15.* ; unaffected 6.1.82 ≤ 6.1.* ; unaffected 6.6.64 ≤ 6.6.*

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD