CVE-2026-80996

CVE CVE-2026-80996EUVD EUVD-2026-76319Published 2026-09-11T19:42:51.000Z

What the advisory describes

In the Linux kernel, the following vulnerability has been resolved: net: l2tp: do not propagate multicast notification errors The tunnel create, tunnel modify, session create, and session modify netlink handlers send multicast notifications through helpers that can fail while allocating or encoding a message, or while multicasting it. For tunnel and session create/modify, a notification is sent after the live operation has completed. Returning a best-effort notification error as the command result can therefore report failure for an operation that already committed and can cause callers to retry and accumulate live objects. Keep sending notifications for listener visibility, but do not propagate their best-effort status as the command result. This also keeps the tunnel modify command consistent with the other notification-only paths.

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

Linux — Linux 4.0; patch: 6.12.109; patch: 0; 33f72e6f0c67f673fd0c63a8182dbd9ffb8cf50b <af20e269f7459d2ce69887fdf2fad7caf986c865; 33f72e6f0c67f673fd0c63a8182dbd9ffb8cf50b <9c340473f4822bb31b151c19afd17448eda5acd1; 33f72e6f0c67f673fd0c63a8182dbd9ffb8cf50b <0fe037d5eaad938aa3e9143ee071aa237750b42b; 33f72e6f0c67f673fd0c63a8182dbd9ffb8cf50b <50c4038f1670bf9a80c6a58ae83d1602decd8481; patch: 7.3-rc1; patch: 7.2.4; patch: 6.18.50

The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.

Carried in the product catalogue

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Linux — Linux

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