CVE-2026-80733

CVE CVE-2026-80733EUVD EUVD-2026-70337Published 2026-09-03T08:21:50.000Z

What the advisory describes

In the Linux kernel, the following vulnerability has been resolved: net: remove WARN_ON_ONCE() from sk_mc_loop() sk_mc_loop() can be called for sockets that are neither AF_INET nor AF_INET6 (e.g. AF_PACKET sockets when sending packets via raw/packet socket over virtual devices such as VRF or ipvlan). In such cases, sk_family is not AF_INET/AF_INET6 and sk_mc_loop() falls through the switch statement and triggers WARN_ON_ONCE(1). Non-INET sockets do not support IP_MULTICAST_LOOP or IPV6_MULTICAST_LOOP options, so loopback should default to true without generating a warning.

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 patch: 0; f60e5990d9c1424af9dbca60a23ba2a1c7c1ce90 <c8f256dc849205ccb2bd78bd99a3497b972b44e0; f60e5990d9c1424af9dbca60a23ba2a1c7c1ce90 <b8a39a09ae4eaae04309e1e38ed6a1101d967496; c8c30b2b17f2133e953850c547e3902c3a3d80e2; f60e5990d9c1424af9dbca60a23ba2a1c7c1ce90 <ad7dbb1d14b1b4406eca8ef9478e8de312ba0cfe; patch: 6.12.104; f60e5990d9c1424af9dbca60a23ba2a1c7c1ce90 <ad7fa2f411cb30f63d6725f111be134064cdb718; 3.18.13 <3.19; f60e5990d9c1424af9dbca60a23ba2a1c7c1ce90 <f625c742b33dc137c209dd13d1c5f12b1c18d71c; 3.19.6 <3.20; patch: 5.10.265; patch: 6.6.152; patch: 7.1.9; f60e5990d9c1424af9dbca60a23ba2a1c7c1ce90 <97133c4d42654578fab95abe47359ebe784dde18; 3fe207e4637a2e792c46a08666aa722f77d7f8f7; 3.14.40 <3.15; patch: 6.18.45; patch: 7.2; patch: 5.15.216; f60e5990d9c1424af9dbca60a23ba2a1c7c1ce90 <d2adc4e80b29e58b5162ae09f0f657a215806c8c; f60e5990d9c1424af9dbca60a23ba2a1c7c1ce90 <0d75f2c1d0764efa756ad9c1e078d8c09ea8fc1f; 4.0; patch: 6.1.183; c91f81773cd4bbebfe744e9ab30a7ce093f9b930

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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