erofs: handle NONHEAD !delta[1] lclusters gracefully (Linux Linux)

CVE-2024-53234
MEDIUM 5.5

En bref

Source
NVD
EPSS
EPSS 0.21 % · centile 11 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Modified

Description

In the Linux kernel, the following vulnerability has been resolved: erofs: handle NONHEAD !delta[1] lclusters gracefully syzbot reported a WARNING in iomap_iter_done: iomap_fiemap+0x73b/0x9b0 fs/iomap/fiemap.c:80 ioctl_fiemap fs/ioctl.c:220 [inline] Generally, NONHEAD lclusters won't have delta[1]==0, except for crafted images and filesystems created by pre-1.0 mkfs versions. Previously, it would immediately bail out if delta[1]==0, which led to inadequate decompressed lengths (thus FIEMAP is impacted). Treat it as delta[1]=1 to work around these legacy mkfs versions. `lclusterbits > 14` is illegal for compact indexes, error out too.

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 d95ae5e25326092d61613acf98280270dde22778 < 75a0a6dde803e7a3af700da8da9a361b49f69eba ; affected d95ae5e25326092d61613acf98280270dde22778 < f466641debcbea8bdf78d1b63a6270aadf9301bf ; affected d95ae5e25326092d61613acf98280270dde22778 < 480c6c7b55aeacac800bc2a0d321ff53273045e5 ; affected d95ae5e25326092d61613acf98280270dde22778 < daaf68fef4b2ff97928227630021d37b27a96655 ; affected d95ae5e25326092d61613acf98280270dde22778 < 0bc8061ffc733a0a246b8689b2d32a3e9204f43c ; affected 96a85becb811ca2ce21a21721f1544d342ae431e
Linux · Linuxaffected 5.15 ; unaffected 0 < 5.15 ; unaffected 6.1.127 ≤ 6.1.* ; unaffected 6.6.64 ≤ 6.6.* ; unaffected 6.11.11 ≤ 6.11.* ; unaffected 6.12.2 ≤ 6.12.*

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