can: netlink: can_changelink(): fix NULL pointer deref of struct can_priv::do_set_mode (Linux Linux)

CVE-2025-38665
MEDIUM 5.5

En bref

Source
NVD
EPSS
EPSS 0.15 % · centile 5 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Analyzed

Description

In the Linux kernel, the following vulnerability has been resolved: can: netlink: can_changelink(): fix NULL pointer deref of struct can_priv::do_set_mode Andrei Lalaev reported a NULL pointer deref when a CAN device is restarted from Bus Off and the driver does not implement the struct can_priv::do_set_mode callback. There are 2 code path that call struct can_priv::do_set_mode: - directly by a manual restart from the user space, via can_changelink() - delayed automatic restart after bus off (deactivated by default) To prevent the NULL pointer deference, refuse a manual restart or configure the automatic restart delay in can_changelink() and report the error via extack to user space. As an additional safety measure let can_restart() return an error if can_priv::do_set_mode is not set instead of dereferencing it unchecked.

Faiblesses (CWE)

  • CWE-476 — Déréférencement de pointeur nul

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 39549eef3587f1c1e8c65c88a2400d10fd30ea17 < 6bbcf37c5114926c99a1d1e6993a5b35689d2599 ; affected 39549eef3587f1c1e8c65c88a2400d10fd30ea17 < cf81a60a973358dea163f6b14062f17831ceb894 ; affected 39549eef3587f1c1e8c65c88a2400d10fd30ea17 < 0ca816a96fdcf32644c80cbe7a82c7b6ce6ddda5 ; affected 39549eef3587f1c1e8c65c88a2400d10fd30ea17 < 6acceb46180f9e160d4f0c56fcaf39ba562822ae ; affected 39549eef3587f1c1e8c65c88a2400d10fd30ea17 < c1f3f9797c1f44a762e6f5f72520b2e520537b52
Linux · Linuxaffected 2.6.31 ; unaffected 0 < 2.6.31 ; unaffected 6.1.148 ≤ 6.1.* ; unaffected 6.6.101 ≤ 6.6.* ; unaffected 6.12.41 ≤ 6.12.* ; unaffected 6.15.9 ≤ 6.15.*

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