Riskcovery

CVE-2026-80996

net: l2tp: do not propagate multicast notification errors

State
Published
Severity
Not scored
Published
Sep 11, 2026
Updated
Oct 30, 2026
Reserved
Aug 26, 2026

Read the record on cve.org

Description

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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • 33f72e6f0c67f673fd0c63a8182dbd9ffb8cf50b to before 73761c3cfb6d86392d63335d10f464b9d43275a7Affected
  • 33f72e6f0c67f673fd0c63a8182dbd9ffb8cf50b to before 7efe1c31e0903a5aa796feb96d3adab574b7ff41Affected
  • 33f72e6f0c67f673fd0c63a8182dbd9ffb8cf50b to before 0fe037d5eaad938aa3e9143ee071aa237750b42bAffected
  • 33f72e6f0c67f673fd0c63a8182dbd9ffb8cf50b to before 9c340473f4822bb31b151c19afd17448eda5acd1Affected
  • 33f72e6f0c67f673fd0c63a8182dbd9ffb8cf50b to before 50c4038f1670bf9a80c6a58ae83d1602decd8481Affected
  • 33f72e6f0c67f673fd0c63a8182dbd9ffb8cf50b to before af20e269f7459d2ce69887fdf2fad7caf986c865Affected
LinuxLinux
  • 4.0Affected
  • before 4.0Not affected
  • 6.1.191 through 6.1.*Not affected
  • 6.6.160 through 6.6.*Not affected
  • 6.12.109 through 6.12.*Not affected
  • 6.18.50 through 6.18.*Not affected
  • 7.2.4 through 7.2.*Not affected
  • 7.3 and laterNot affected

References

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