CVE-2026-31679

high

In the Linux kernel, the following vulnerability has been resolved: openvswitch: validate MPLS set/set_masked payload length validate_set() accepted OVS_KEY_…

Vendor / product: Linux — linux kernel

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

7.1 (CVSS v3.1)

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Severity source: NVD CVSS v3.1 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)

Timeline (UTC)

Published: 2026-04-25 09:16

Modified: 2026-11-11 23:10

NVD status: Modified

Last synced 3 hours ago

Verified against the source API 2026-11-11 23:13 UTC

Exploitation

Not listed in CISA KEV (as of last catalog sync)

Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).

Affected products

linux / linux_kernel ≥5.5 <5.10.253, ≥5.11 <5.15.203, ≥5.16 <6.1.168, ≥6.2 <6.6.131, ≥6.7 <6.12.80, ≥6.13 <6.18.21

Weakness classification (CWE)

NVD-CWE-noinfo CWE-20

Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.

Mitigation & advisories

Patch / mitigation: https://git.kernel.org/stable/c/2ca33b88a79ca42f017ae0f7011280325655438e

Patch / mitigation: https://git.kernel.org/stable/c/4cae986225f8b8679ad86b924918e7d75a96aa61

Patch / mitigation: https://git.kernel.org/stable/c/546b68ac893595877ffbd7751e5c55fd1c43ede6

Patch / mitigation: https://git.kernel.org/stable/c/68f32ef0683c8d1c05cd2e4f16818fa63ff59c6f

Patch / mitigation: https://git.kernel.org/stable/c/8ed7b9930cbc3bc71f868fa79a68700ac88d586a

Patch / mitigation: https://git.kernel.org/stable/c/98de18d327ef8cbbb704980e359e4872d8c28997

Patch / mitigation: https://git.kernel.org/stable/c/bd50c7484c3bb34097571c1334174fb8b7408036

Patch / mitigation: https://git.kernel.org/stable/c/c1f97152df8dfb17e855ddf0fc409b7bd13e9700

References

https://git.kernel.org/stable/c/2ca33b88a79ca42f017ae0f7011280325655438e 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/4cae986225f8b8679ad86b924918e7d75a96aa61 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/546b68ac893595877ffbd7751e5c55fd1c43ede6 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/68f32ef0683c8d1c05cd2e4f16818fa63ff59c6f 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/8ed7b9930cbc3bc71f868fa79a68700ac88d586a 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/98de18d327ef8cbbb704980e359e4872d8c28997 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/bd50c7484c3bb34097571c1334174fb8b7408036 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/c1f97152df8dfb17e855ddf0fc409b7bd13e9700 416baaa9-dc9f-4396-8d5f-8c081fb06d67

Data sources

NVD CVE API 2.0 — fetched 2026-11-11 23:13 UTC · record ↗

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CVE-2026-31679

Affected products

Weakness classification (CWE)

Mitigation & advisories

References

Data sources

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