char: applicom: fix NULL pointer dereference in ac_ioctl (Linux Linux)

CVE-2025-68797
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Source
NVD
EPSS
EPSS 0.21 % · centile 11 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Deferred

Description

In the Linux kernel, the following vulnerability has been resolved: char: applicom: fix NULL pointer dereference in ac_ioctl Discovered by Atuin - Automated Vulnerability Discovery Engine. In ac_ioctl, the validation of IndexCard and the check for a valid RamIO pointer are skipped when cmd is 6. However, the function unconditionally executes readb(apbs[IndexCard].RamIO + VERS) at the end. If cmd is 6, IndexCard may reference a board that does not exist (where RamIO is NULL), leading to a NULL pointer dereference. Fix this by skipping the readb access when cmd is 6, as this command is a global information query and does not target a specific board context.

Références

Références européennes

Avis du CERT-FR

Produits affectés

ProduitVersions
Linux · Linuxaffected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 5a6240804fb7bbd4f5f6e706955248a6f4c1abbc ; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < d1b0452280029d05a98c75631131ee61c0b0d084 ; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 0b8b353e09888bccee405e0dd6feafb60360f478 ; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < d285517429a75423789e6408653e57b6fdfc8e54 ; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 74883565c621eec6cd2e35fe6d27454cf2810c23 ; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < f83e3e9f89181b42f6076a115d767a7552c4a39e
Linux · Linuxaffected 2.6.12 ; unaffected 0 < 2.6.12 ; unaffected 5.10.248 ≤ 5.10.* ; unaffected 5.15.198 ≤ 5.15.* ; unaffected 6.1.160 ≤ 6.1.* ; unaffected 6.6.120 ≤ 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