{"id":"CVE-2026-31679","revision":"fa000ad241544119a22ec2f27f24f473","records":[{"revision":"fa000ad241544119a22ec2f27f24f473","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-31679","aliases":[],"title":"openvswitch: validate MPLS set/set_masked payload length","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nopenvswitch: validate MPLS set/set_masked payload length\n\nvalidate_set() accepted OVS_KEY_ATTR_MPLS as variable-sized payload for\nSET/SET_MASKED actions. In action handling, OVS expects fixed-size\nMPLS key data (struct ovs_key_mpls).\n\nUse the already normalized key_len (masked case included) and reject\nnon-matching MPLS action key sizes.\n\nReject invalid MPLS action payload lengths early.","state":0,"publishedAt":"2026-04-25T08:46:55.584+00:00","modifiedAt":"2026-10-19T18:56:04.364+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"net/openvswitch/flow_netlink.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"fbdcdd78da7c95f1b970d371e1b23cbd3aa990f3\",\n                            \"lessThan\": \"68f32ef0683c8d1c05cd2e4f16818fa63ff59c6f\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"fbdcdd78da7c95f1b970d371e1b23cbd3aa990f3\",\n                            \"lessThan\": \"4cae986225f8b8679ad86b924918e7d75a96aa61\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"fbdcdd78da7c95f1b970d371e1b23cbd3aa990f3\",\n                            \"lessThan\": \"8ed7b9930cbc3bc71f868fa79a68700ac88d586a\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"fbdcdd78da7c95f1b970d371e1b23cbd3aa990f3\",\n                            \"lessThan\": \"c1f97152df8dfb17e855ddf0fc409b7bd13e9700\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"fbdcdd78da7c95f1b970d371e1b23cbd3aa990f3\",\n                            \"lessThan\": \"98de18d327ef8cbbb704980e359e4872d8c28997\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"fbdcdd78da7c95f1b970d371e1b23cbd3aa990f3\",\n                            \"lessThan\": \"bd50c7484c3bb34097571c1334174fb8b7408036\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"fbdcdd78da7c95f1b970d371e1b23cbd3aa990f3\",\n                            \"lessThan\": \"2ca33b88a79ca42f017ae0f7011280325655438e\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"fbdcdd78da7c95f1b970d371e1b23cbd3aa990f3\",\n                            \"lessThan\": \"546b68ac893595877ffbd7751e5c55fd1c43ede6\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"net/openvswitch/flow_netlink.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"5.5\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"5.5\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.253\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.203\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.168\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.131\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.80\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.21\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.19.11\",\n                            \"lessThanOrEqual\": \"6.19.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.0\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","score":7.1,"severity":"HIGH"}],"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"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-31679","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-31679","identifiers":["CVE-2026-31679"]},"retained":false,"historicalAffected":[]}],"coverage":[]}