CVE-2026-31416: Linux Kernel

Medium severity, CVSS 5.5. EPSS: 0.2% chance of exploitation in the next 30 days.

In the Linux kernel, the following vulnerability has been resolved: netfilter: nfnetlink_log: account for netlink header size This is a followup to an old bug fix: NLMSG_DONE needs to account for the netlink header size, not just the attribute size. This can result in a WARN splat + drop of the netlink message, but other than this there are no ill effects.

Affected products

• Linux Linux Kernel: from 3.10.61, before 3.11 (fixed in 3.11); from 3.12.34, before 3.13 (fixed in 3.13); from 3.14.25, before 3.15 (fixed in 3.15); from 3.18, before 5.10.253 (fixed in 5.10.253); from 5.11, before 5.15.203 (fixed in 5.15.203); from 5.16, before 6.1.168 (fixed in 6.1.168); …

Published 2026-04-13. Last modified 2026-07-14.