CVE-2026-31679 (GCVE-0-2026-31679)

Vulnerability from cvelistv5 – Published: 2026-04-25 08:46 – Updated: 2026-04-25 08:46
VLAI?
Title
openvswitch: validate MPLS set/set_masked payload length
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.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: fbdcdd78da7c95f1b970d371e1b23cbd3aa990f3 , < 68f32ef0683c8d1c05cd2e4f16818fa63ff59c6f (git)
Affected: fbdcdd78da7c95f1b970d371e1b23cbd3aa990f3 , < 4cae986225f8b8679ad86b924918e7d75a96aa61 (git)
Affected: fbdcdd78da7c95f1b970d371e1b23cbd3aa990f3 , < 8ed7b9930cbc3bc71f868fa79a68700ac88d586a (git)
Affected: fbdcdd78da7c95f1b970d371e1b23cbd3aa990f3 , < c1f97152df8dfb17e855ddf0fc409b7bd13e9700 (git)
Affected: fbdcdd78da7c95f1b970d371e1b23cbd3aa990f3 , < 98de18d327ef8cbbb704980e359e4872d8c28997 (git)
Affected: fbdcdd78da7c95f1b970d371e1b23cbd3aa990f3 , < bd50c7484c3bb34097571c1334174fb8b7408036 (git)
Affected: fbdcdd78da7c95f1b970d371e1b23cbd3aa990f3 , < 2ca33b88a79ca42f017ae0f7011280325655438e (git)
Affected: fbdcdd78da7c95f1b970d371e1b23cbd3aa990f3 , < 546b68ac893595877ffbd7751e5c55fd1c43ede6 (git)
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    Linux Linux Affected: 5.5
Unaffected: 0 , < 5.5 (semver)
Unaffected: 5.10.253 , ≤ 5.10.* (semver)
Unaffected: 5.15.203 , ≤ 5.15.* (semver)
Unaffected: 6.1.168 , ≤ 6.1.* (semver)
Unaffected: 6.6.131 , ≤ 6.6.* (semver)
Unaffected: 6.12.80 , ≤ 6.12.* (semver)
Unaffected: 6.18.21 , ≤ 6.18.* (semver)
Unaffected: 6.19.11 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)
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          "programFiles": [
            "net/openvswitch/flow_netlink.c"
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        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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    "dateReserved": "2026-03-09T15:48:24.130Z",
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  }
}


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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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