CVE-2024-40972

ext4: do not create EA inode under buffer lock

En bref

Sévérité
Non disponible
EPSS
EPSS 0.22 % · centile 13 (2026-10-27)
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Modified

Description

In the Linux kernel, the following vulnerability has been resolved: ext4: do not create EA inode under buffer lock ext4_xattr_set_entry() creates new EA inodes while holding buffer lock on the external xattr block. This is problematic as it nests all the allocation locking (which acquires locks on other buffers) under the buffer lock. This can even deadlock when the filesystem is corrupted and e.g. quota file is setup to contain xattr block as data block. Move the allocation of EA inode out of ext4_xattr_set_entry() into the callers.

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)

Faiblesses (CWE)

Références européennes

Avis du CERT-FR

Configurations affectées (CPE NVD)

Produits affectés

ProduitVersions
Linux · Linuxaffected e50e5129f384ae282adebfb561189cdb19b81cee < 0752e7fb549d90c33b4d4186f11cfd25a556d1dd ; affected e50e5129f384ae282adebfb561189cdb19b81cee < 737fb7853acd5bc8984f6f42e4bfba3334be8ae1 ; affected e50e5129f384ae282adebfb561189cdb19b81cee < 111103907234bffd0a34fba070ad9367de058752 ; affected e50e5129f384ae282adebfb561189cdb19b81cee < 0a46ef234756dca04623b7591e8ebb3440622f0b
Linux · Linuxaffected 4.13 ; unaffected 0 < 4.13 ; unaffected 6.1.107 ≤ 6.1.* ; unaffected 6.6.47 ≤ 6.6.* ; unaffected 6.9.7 ≤ 6.9.* ; unaffected 6.10 ≤ *

Références

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