Description
In the Linux kernel, the following vulnerability has been resolved: openvswitch: validate MPLS set/set_masked payload length validate_set() accepted OVS_KEY_ATTR_MPLS as variable-sized payload for SET/SET_MASKED actions. In action handling, OVS expects fixed-size MPLS key data (struct ovs_key_mpls). Use the already normalized key_len (masked case included) and reject non-matching MPLS action key sizes. Reject invalid MPLS action payload lengths early.
Affected products
linux: linux kernel
References8
- git.kernel.org/stable/c/2ca33b88a79ca42f017ae0f7011280325655438e Patch
- git.kernel.org/stable/c/4cae986225f8b8679ad86b924918e7d75a96aa61 Patch
- git.kernel.org/stable/c/546b68ac893595877ffbd7751e5c55fd1c43ede6 Patch
- git.kernel.org/stable/c/68f32ef0683c8d1c05cd2e4f16818fa63ff59c6f Patch
- git.kernel.org/stable/c/8ed7b9930cbc3bc71f868fa79a68700ac88d586a Patch
- git.kernel.org/stable/c/98de18d327ef8cbbb704980e359e4872d8c28997 Patch
- git.kernel.org/stable/c/bd50c7484c3bb34097571c1334174fb8b7408036 Patch
- git.kernel.org/stable/c/c1f97152df8dfb17e855ddf0fc409b7bd13e9700 Patch
Metrics
- CVSS 3.1
-
7.1
HIGH
Score source: CNA
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H - EPSS — exploit probability
- 0% percentile: 5 · as of 13 November 2026
- CWE
- CWE-20
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