CVE-2026-31752

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.

CVSS 3.1

5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS

0.1% chance of exploitation in the next 30 days; higher than 2% of CVEs (scores of 2026-10-25)

Published

2026-05-01

Modified

2026-10-15

Record from

the NVD, synced 2026-10-19

Affected

• linux:linux_kernel

References

• https://git.kernel.org/stable/c/259466f76f5a2148aff11134e68f4b4c6d52725b
• https://git.kernel.org/stable/c/82a42eceec7c6bdb0e0da94c0542a173b7ea57f2
• https://git.kernel.org/stable/c/837392a38445729c22e03d3abcf33f07763efd85
• https://git.kernel.org/stable/c/850837965af15707fd3142c1cf3c5bfaf022299b
• https://git.kernel.org/stable/c/c49b9256bbacb6a135654aebd12e4c0e87166b7c

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