CVE-2026-80996net: l2tp: do not propagate multicast notification errors
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Oct 19, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | 33f72e6f0c67f673fd0c63a8182dbd9ffb8cf50b builds before 0fe037d5eaad938aa3e9143ee071aa237750b42b; 33f72e6f0c67f673fd0c63a8182dbd9ffb8cf50b builds before 9c340473f4822bb31b151c19afd17448eda5acd1; from 33f72e6f0c67f673fd0c63a8182dbd9ffb8cf50b before 50c4038f1670bf9a80c6a58ae83d1602decd8481; from 33f72e6f0c67f673fd0c63a8182dbd9ffb8cf50b before af20e269f7459d2ce69887fdf2fad7caf986c865 | CNA record |
References
- https://git.kernel.org/stable/c/0fe037d5eaad938aa3e9143ee071aa237750b42b
- https://git.kernel.org/stable/c/9c340473f4822bb31b151c19afd17448eda5acd1
- https://git.kernel.org/stable/c/50c4038f1670bf9a80c6a58ae83d1602decd8481
- https://git.kernel.org/stable/c/af20e269f7459d2ce69887fdf2fad7caf986c865
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.