bridge: br_nd_send: linearize skb before parsing ND options (Linux Linux)

CVE-2026-31682
CRITICAL 9.1

En bref

Source
NVD
EPSS
EPSS 0.64 % · centile 51 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Modified

Description

In the Linux kernel, the following vulnerability has been resolved: bridge: br_nd_send: linearize skb before parsing ND options br_nd_send() parses neighbour discovery options from ns->opt[] and assumes that these options are in the linear part of request. Its callers only guarantee that the ICMPv6 header and target address are available, so the option area can still be non-linear. Parsing ns->opt[] in that case can access data past the linear buffer. Linearize request before option parsing and derive ns from the linear network header.

Faiblesses (CWE)

  • CWE-125 — Lecture hors limites

Références

Scores

VersionScoreVecteurÉvalué par
CVSS 3.1CRITICAL 9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:HLinux
CVSS 3.1CRITICAL 9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:HNVD · 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Secondary)

Références européennes

Avis du CERT-FR

Configurations affectées (CPE NVD)

Produits affectés

ProduitVersions
Linux · Linuxaffected ed842faeb2bd49256f00485402f3113205f91d30 < c68433fd291c9e88c00292095172c62d1997d662 ; affected ed842faeb2bd49256f00485402f3113205f91d30 < 4f397b950c916e9a1f8a4fce04ea0110206cad47 ; affected ed842faeb2bd49256f00485402f3113205f91d30 < bd91ec85aa4c77d645bd2739fc56784157a88ca2 ; affected ed842faeb2bd49256f00485402f3113205f91d30 < 658261898130da620fc3d0fbb0523efb3366cb55 ; affected ed842faeb2bd49256f00485402f3113205f91d30 < 2ba4caba423ed94d63006eb1d2227b0332ab7fcd ; affected ed842faeb2bd49256f00485402f3113205f91d30 < 9c55e41c73af5c4511070933b1bd25248521270c
Linux · Linuxaffected 4.15 ; unaffected 0 < 4.15 ; unaffected 5.10.253 ≤ 5.10.* ; unaffected 5.15.203 ≤ 5.15.* ; unaffected 6.1.168 ≤ 6.1.* ; unaffected 6.6.134 ≤ 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