CVE-2026-46023

dm mirror: fix integer overflow in create_dirty_log()

MEDIUM 5.5

En bref

Source
NVD
EPSS
EPSS 0.13 % · centile 3 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Modified

Description

In the Linux kernel, the following vulnerability has been resolved: dm mirror: fix integer overflow in create_dirty_log() The argument count calculation in create_dirty_log() performs `*args_used = 2 + param_count` before validating against argc. When a user provides a param_count close to UINT_MAX via the device mapper table string, this unsigned addition wraps around to a small value, causing the subsequent `argc < *args_used` check to be bypassed. The overflowed param_count is then passed as argc to dm_dirty_log_create(), where it can cause out-of-bounds reads on the argv array. Fix by comparing param_count against argc - 2 before performing the addition, following the same pattern used by parse_features() in the same file. Since argc >= 2 is already guaranteed, the subtraction is safe.

Faiblesses (CWE)

  • CWE-190 — Débordement d'entier

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 < e5e0ae3237584ebef510366c4cb3d5cc7c22b610 ; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 249c831183fb806c8e3b14c7c4c1d2fb68cf37fb ; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < ae59b3025609d5a0a39cf5b2b94e2467f6231573 ; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 35f6b3281efd44d19110574663bc17a610bc73b9 ; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 47dad9eea75d33212d3d2cea10e7ed6a1bfc0713 ; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 87c99a50e0fdc68a5b9b52a94d49452cd3ff02ca
Linux · Linuxaffected 2.6.12 ; unaffected 0 < 2.6.12 ; unaffected 5.10.258 ≤ 5.10.* ; unaffected 5.15.209 ≤ 5.15.* ; unaffected 6.1.175 ≤ 6.1.* ; unaffected 6.6.140 ≤ 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