{"id":"CVE-2026-98251","revision":"e97d366ffef44e0bbc164d4efa1aa329","records":[{"revision":"e97d366ffef44e0bbc164d4efa1aa329","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-98251","aliases":[],"title":"openvswitch: avoid reallocating confirmed conntrack labels","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nopenvswitch: avoid reallocating confirmed conntrack labels\n\novs_ct_get_conn_labels() adds the labels extension when a conntrack\nentry does not have one.  Confirmed conntracks can be read locklessly,\nso adding an extension may reallocate and free the extension block\nwhile another CPU accesses it.\n\nOnly add the extension for unconfirmed conntracks.  A confirmed\nconntrack without labels now fails the caller's label operation instead\nof reallocating its extension storage.","state":0,"publishedAt":"2026-10-06T08:45:18.707+00:00","modifiedAt":"2026-10-19T09:16:22.619+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/conntrack.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"c2ac667358708d7cce64c78f58af6adf4c1e848b\",\n                            \"lessThan\": \"4371d79ea74407fb992c985b1f94391e35bb8289\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"c2ac667358708d7cce64c78f58af6adf4c1e848b\",\n                            \"lessThan\": \"7ff688aceada1160331a789385ea146f62fbddf7\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"c2ac667358708d7cce64c78f58af6adf4c1e848b\",\n                            \"lessThan\": \"05eab8dced6bf4d3009a6eeee16ddac99047dc83\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"c2ac667358708d7cce64c78f58af6adf4c1e848b\",\n                            \"lessThan\": \"579d87ec1e1e85729a6cb2c25961e58beb78640c\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"c2ac667358708d7cce64c78f58af6adf4c1e848b\",\n                            \"lessThan\": \"2e6dd889c325abf23821e1459c3ffef59b7f0009\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"c2ac667358708d7cce64c78f58af6adf4c1e848b\",\n                            \"lessThan\": \"d16f089bd700f45d720ce989d5495e1dc3be0cf8\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"c2ac667358708d7cce64c78f58af6adf4c1e848b\",\n                            \"lessThan\": \"8c9fcc6c33950d3db551af664d1fd3d998bfee56\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"c2ac667358708d7cce64c78f58af6adf4c1e848b\",\n                            \"lessThan\": \"3f118c8217c109fd13ca61caa301d72c483897ef\",\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/conntrack.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"4.3\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"4.3\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.271\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.222\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.189\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.158\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.112\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.54\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.8\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\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:H/A:H","score":7.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/4371d79ea74407fb992c985b1f94391e35bb8289","https://git.kernel.org/stable/c/7ff688aceada1160331a789385ea146f62fbddf7","https://git.kernel.org/stable/c/05eab8dced6bf4d3009a6eeee16ddac99047dc83","https://git.kernel.org/stable/c/579d87ec1e1e85729a6cb2c25961e58beb78640c","https://git.kernel.org/stable/c/2e6dd889c325abf23821e1459c3ffef59b7f0009","https://git.kernel.org/stable/c/d16f089bd700f45d720ce989d5495e1dc3be0cf8","https://git.kernel.org/stable/c/8c9fcc6c33950d3db551af664d1fd3d998bfee56","https://git.kernel.org/stable/c/3f118c8217c109fd13ca61caa301d72c483897ef"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-98251","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-98251","identifiers":["CVE-2026-98251"]},"retained":false,"historicalAffected":[]}],"coverage":[]}