CVE-2026-31752

MEDIUM

bridge: br_nd_send: validate ND option lengths

Title source: cna
STIX 2.1

Description

In the Linux kernel, the following vulnerability has been resolved: bridge: br_nd_send: validate ND option lengths br_nd_send() 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.

Scores

CVSS v3 5.5
EPSS 0.0001
EPSS Percentile 2.4%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Details

Status published
Products (20)
Linux/Linux < 4.15
Linux/Linux 4.15
Linux/Linux 5.10.253 - 5.10.*
Linux/Linux 5.15.203 - 5.15.*
Linux/Linux 6.1.168 - 6.1.*
Linux/Linux 6.12.81 - 6.12.*
Linux/Linux 6.18.22 - 6.18.*
Linux/Linux 6.19.12 - 6.19.*
Linux/Linux 6.6.134 - 6.6.*
Linux/Linux 7.0
... and 10 more
Published May 01, 2026
Tracked Since May 01, 2026