CVE-2026-31679
7.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Summary
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 Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | fbdcdd78da7c95f1b970d371e1b23cbd3aa990f3 < 68f32ef0683c8d1c05cd2e4f16818fa63ff59c6f | affected |
| Linux | Linux | fbdcdd78da7c95f1b970d371e1b23cbd3aa990f3 < 4cae986225f8b8679ad86b924918e7d75a96aa61 | affected |
| Linux | Linux | fbdcdd78da7c95f1b970d371e1b23cbd3aa990f3 < 8ed7b9930cbc3bc71f868fa79a68700ac88d586a | affected |
| Linux | Linux | fbdcdd78da7c95f1b970d371e1b23cbd3aa990f3 < c1f97152df8dfb17e855ddf0fc409b7bd13e9700 | affected |
| Linux | Linux | fbdcdd78da7c95f1b970d371e1b23cbd3aa990f3 < 98de18d327ef8cbbb704980e359e4872d8c28997 | affected |
| Linux | Linux | fbdcdd78da7c95f1b970d371e1b23cbd3aa990f3 < bd50c7484c3bb34097571c1334174fb8b7408036 | affected |
| Linux | Linux | fbdcdd78da7c95f1b970d371e1b23cbd3aa990f3 < 2ca33b88a79ca42f017ae0f7011280325655438e | affected |
| Linux | Linux | fbdcdd78da7c95f1b970d371e1b23cbd3aa990f3 < 546b68ac893595877ffbd7751e5c55fd1c43ede6 | affected |
| Linux | Linux | 5.5 | affected |
| Linux | Linux | 0 < 5.5 | unaffected |
| Linux | Linux | 5.10.253 <= 5.10.* | unaffected |
| Linux | Linux | 5.15.203 <= 5.15.* | unaffected |
| Linux | Linux | 6.1.168 <= 6.1.* | unaffected |
| Linux | Linux | 6.6.131 <= 6.6.* | unaffected |
| Linux | Linux | 6.12.80 <= 6.12.* | unaffected |
| Linux | Linux | 6.18.21 <= 6.18.* | unaffected |
| Linux | Linux | 6.19.11 <= 6.19.* | unaffected |
| Linux | Linux | 7.0 <= * | unaffected |
Weaknesses
References
- https://git.kernel.org/stable/c/68f32ef0683c8d1c05cd2e4f16818fa63ff59c6f
- https://git.kernel.org/stable/c/4cae986225f8b8679ad86b924918e7d75a96aa61
- https://git.kernel.org/stable/c/8ed7b9930cbc3bc71f868fa79a68700ac88d586a
- https://git.kernel.org/stable/c/c1f97152df8dfb17e855ddf0fc409b7bd13e9700
- https://git.kernel.org/stable/c/98de18d327ef8cbbb704980e359e4872d8c28997
- https://git.kernel.org/stable/c/bd50c7484c3bb34097571c1334174fb8b7408036
- https://git.kernel.org/stable/c/2ca33b88a79ca42f017ae0f7011280325655438e
- https://git.kernel.org/stable/c/546b68ac893595877ffbd7751e5c55fd1c43ede6
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