CVE-2026-31679openvswitch: validate MPLS set/set_masked payload length
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: 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.
- CVSS
- 7.1 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
- 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
- Analyzed
- Record last updated
- Oct 16, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from fbdcdd78da7c95f1b970d371e1b23cbd3aa990f3 before 68f32ef0683c8d1c05cd2e4f16818fa63ff59c6f; from fbdcdd78da7c95f1b970d371e1b23cbd3aa990f3 before 4cae986225f8b8679ad86b924918e7d75a96aa61; from fbdcdd78da7c95f1b970d371e1b23cbd3aa990f3 before 8ed7b9930cbc3bc71f868fa79a68700ac88d586a; from fbdcdd78da7c95f1b970d371e1b23cbd3aa990f3 before c1f97152df8dfb17e855ddf0fc409b7bd13e9700; from fbdcdd78da7c95f1b970d371e1b23cbd3aa990f3 before 98de18d327ef8cbbb704980e359e4872d8c28997; from fbdcdd78da7c95f1b970d371e1b23cbd3aa990f3 before bd50c7484c3bb34097571c1334174fb8b7408036; from fbdcdd78da7c95f1b970d371e1b23cbd3aa990f3 before 2ca33b88a79ca42f017ae0f7011280325655438e; from fbdcdd78da7c95f1b970d371e1b23cbd3aa990f3 before 546b68ac893595877ffbd7751e5c55fd1c43ede6 | CNA record |
linux linux_kernel linux:linux_kernel | from 5.5 before 5.10.253; from 5.11 before 5.15.203; from 5.16 before 6.1.168; from 6.2 before 6.6.131; from 6.7 before 6.12.80; from 6.13 before 6.18.21; from 6.19 before 6.19.11; 7.0; and 4 more ranges | NVD |
References
- https://git.kernel.org/stable/c/68f32ef0683c8d1c05cd2e4f16818fa63ff59c6fpatch
- https://git.kernel.org/stable/c/4cae986225f8b8679ad86b924918e7d75a96aa61patch
- https://git.kernel.org/stable/c/8ed7b9930cbc3bc71f868fa79a68700ac88d586apatch
- https://git.kernel.org/stable/c/c1f97152df8dfb17e855ddf0fc409b7bd13e9700patch
- https://git.kernel.org/stable/c/98de18d327ef8cbbb704980e359e4872d8c28997patch
- https://git.kernel.org/stable/c/bd50c7484c3bb34097571c1334174fb8b7408036patch
- https://git.kernel.org/stable/c/2ca33b88a79ca42f017ae0f7011280325655438epatch
- https://git.kernel.org/stable/c/546b68ac893595877ffbd7751e5c55fd1c43ede6patch
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.