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CVE-2024-26982

Squashfs: check the inode number is not the invalid value of zero

HIGH 7.1

En bref

Source
NVD
EPSS
EPSS 0.28 % · centile 21 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Modified

Description

In the Linux kernel, the following vulnerability has been resolved: Squashfs: check the inode number is not the invalid value of zero Syskiller has produced an out of bounds access in fill_meta_index(). That out of bounds access is ultimately caused because the inode has an inode number with the invalid value of zero, which was not checked. The reason this causes the out of bounds access is due to following sequence of events: 1. Fill_meta_index() is called to allocate (via empty_meta_index()) and fill a metadata index. It however suffers a data read error and aborts, invalidating the newly returned empty metadata index. It does this by setting the inode number of the index to zero, which means unused (zero is not a valid inode number). 2. When fill_meta_index() is subsequently called again on another read operation, locate_meta_index() returns the previous index because it matches the inode number of 0. Because this index has been returned it is expected to have been filled, and because it hasn't been, an out of bounds access is performed. This patch adds a sanity check which checks that the inode number is not zero when the inode is created and returns -EINVAL if it is. [phillip@squashfs.org.uk: whitespace fix]

Faiblesses (CWE)

Références

Scores

VersionScoreVecteurÉvalué par
CVSS 3.1HIGH 7.1CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:HNVD · nvd@nist.gov (Primary)

Références européennes

Avis du CERT-FR

Configurations affectées (CPE NVD)

Produits affectés

ProduitVersions
Linux · Linuxaffected 6545b246a2c815a8fcd07d58240effb6ec3481b1 < 32c114a58236fe67141634774559f21f1dc96fd7 ; affected 6545b246a2c815a8fcd07d58240effb6ec3481b1 < 4a1b6f89825e267e156ccaeba3d235edcac77f94 ; affected 6545b246a2c815a8fcd07d58240effb6ec3481b1 < cf46f88b92cfc0e32bd8a21ba1273cff13b8745f ; affected 6545b246a2c815a8fcd07d58240effb6ec3481b1 < 5b99dea79650b50909c50aba24fbae00f203f013 ; affected 6545b246a2c815a8fcd07d58240effb6ec3481b1 < be383effaee3d89034f0828038f95065b518772e ; affected 6545b246a2c815a8fcd07d58240effb6ec3481b1 < 7def00ebc9f2d6a581ddf46ce4541f84a10680e5
Linux · Linuxaffected 2.6.29 ; unaffected 0 < 2.6.29 ; unaffected 5.4.291 ≤ 5.4.* ; unaffected 5.10.235 ≤ 5.10.* ; unaffected 5.15.179 ≤ 5.15.* ; unaffected 6.1.130 ≤ 6.1.*

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