vxlan: validate ND option lengths in vxlan_na_create (CVE-2026-31738)

Résumé

vxlan: validate ND option lengths in vxlan_na_create

Description d'origine

La description telle que publiée par la source (souvent en anglais).

In the Linux kernel, the following vulnerability has been resolved:

vxlan: validate ND option lengths in vxlan_na_create

vxlan_na_create() walks ND options according to option-provided
lengths. A malformed option can make the parser advance beyond the
computed option span or use a too-short source LLADDR option payload.

Validate option lengths against the remaining NS option area before
advancing, and only read source LLADDR when the option is large enough
for an Ethernet address.

Source: OSV.dev (Open Source Vulnerabilities) NVD OSV

Paquets affectés

Linux Kernel

[{"type":"ECOSYSTEM","events":[{"introduced":"3.14.0"},{"fixed":"5.10.253"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.203"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.168"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.134"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.81"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.22"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"6.19.12"}]}]

État des correctifs par distribution

Paquets corrigés publiés par chaque distribution pour cette CVE

BellSoft Alpaquita BELL-CVE-2026-31738 linux-lts Corrigé dans: 6.1.168-r0
Debian DEBIAN-CVE-2026-31738 linux Corrigé dans: 5.10.257-1
Ubuntu UBUNTU-CVE-2026-31738 linux

Résumé

Description d'origine

Paquets affectés

État des correctifs par distribution

Références