VDB
CVE-2026-31679
CVE-2026-31679
PUBLISHED
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.
EPSS 0.02% · 3.6th percentile
Risk Scores
EPSS Score
0.02%
3.6th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| linux | linux_kernel | 5.5, 5.5, 5.5 |
| Linux | Linux | fbdcdd78da7c95f1b970d371e1b23cbd3aa990f3, fbdcdd78da7c95f1b970d371e1b23cbd3aa990f3, fbdcdd78da7c95f1b970d371e1b23cbd3aa990f3 |
Timeline
- Apr 25, 2026 CVE Published
- Apr 25, 2026 PoC Published
- Apr 27, 2026 Security Advisory
- May 18, 2026 EPSS Score
- May 19, 2026 EPSS Score
- May 20, 2026 EPSS Score
- May 21, 2026 EPSS Score
- May 22, 2026 EPSS Score
- May 23, 2026 EPSS Score
- May 24, 2026 EPSS Score
- May 25, 2026 EPSS Score
- May 26, 2026 EPSS Score
References
- https://git.kernel.org/stable/c/68f32ef0683c8d1c05cd2e4f16818fa63ff59c6f url
- https://git.kernel.org/stable/c/4cae986225f8b8679ad86b924918e7d75a96aa61 url
- https://git.kernel.org/stable/c/8ed7b9930cbc3bc71f868fa79a68700ac88d586a url
- https://git.kernel.org/stable/c/c1f97152df8dfb17e855ddf0fc409b7bd13e9700 url
- https://git.kernel.org/stable/c/98de18d327ef8cbbb704980e359e4872d8c28997 url
- https://git.kernel.org/stable/c/bd50c7484c3bb34097571c1334174fb8b7408036 url
- https://git.kernel.org/stable/c/2ca33b88a79ca42f017ae0f7011280325655438e url
- https://git.kernel.org/stable/c/546b68ac893595877ffbd7751e5c55fd1c43ede6 url
- https://lists.debian.org/debian-lts-announce/2026/05/msg00004.html advisory
- https://lists.debian.org/debian-lts-announce/2026/05/msg00005.html advisory
- https://lists.debian.org/debian-security-announce/2026/msg00154.html advisory
- https://lists.debian.org/debian-security-announce/2026/msg00148.html advisory
- https://lists.debian.org/debian-lts-announce/2026/05/msg00051.html advisory
- https://lists.debian.org/debian-lts-announce/2026/05/msg00052.html advisory
- https://www.suse.com/support/update/announcement/2026/suse-su-202621930-1 advisory
- https://www.suse.com/support/update/announcement/2026/suse-su-202621841-1 advisory
- https://www.suse.com/support/update/announcement/2026/suse-su-20262238-1 advisory
- https://www.suse.com/support/update/announcement/2026/suse-su-202621974-1 advisory
- https://www.suse.com/support/update/announcement/2026/suse-su-20262217-1 advisory
- https://www.suse.com/support/update/announcement/2026/suse-su-202621979-1 advisory
…and 57 more