{"id":"CVE-2026-72450","revision":"6de5ed9d7d6945f9b4b2a47d306de5bd","records":[{"revision":"6de5ed9d7d6945f9b4b2a47d306de5bd","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-72450","aliases":[],"title":"xfrm: validate selector family and prefixlen during match","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nxfrm: validate selector family and prefixlen during match\n\nsyzbot reported a shift-out-of-bounds in xfrm_selector_match()\ndue to AF_UNSPEC selector with large prefixlen (e.g. 128) matched\nagainst IPv4 flow (when XFRM_STATE_AF_UNSPEC is set).\n\nFix this by:\n\n- Rejecting mismatched families in xfrm_selector_match.\n- Returning false in addr4_match if prefixlen > 32.\n- Returning false in addr_match if prefixlen > 128 (prevents overflow).","state":0,"publishedAt":"2026-08-15T05:56:58.939+00:00","modifiedAt":"2026-10-16T18:55:24.828+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                        \"include/net/xfrm.h\",\n                        \"net/xfrm/xfrm_policy.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"8df5cd51fd70c33aa1776e5cbcd82b0a86649d73\",\n                            \"lessThan\": \"87a5bbccc7ff4edb3f42fea387124237d2ba91ee\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"2d08a6c31c65f23db71a5385ee9cf9d8f9a67a71\",\n                            \"lessThan\": \"bd7f202cf77556cff59f68dc30e4cdf40cb6e33b\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"bce1afaa212ec380bf971614f70909a27882b862\",\n                            \"lessThan\": \"a3968ad4195d72c8fddcc6c0ef39da95ac98711a\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"7d9868180bd1e4cf37e7c5067362658971162366\",\n                            \"lessThan\": \"efa9e3b9f3dea2e1ea4c7edf4edc863faef85986\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3f0ab59e6537c6a8f9e1b355b48f9c05a76e8563\",\n                            \"lessThan\": \"78783fefdc8f36879b1a17efa0d3195ea5f2dc5f\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3f0ab59e6537c6a8f9e1b355b48f9c05a76e8563\",\n                            \"lessThan\": \"6d99379c58f7f1c6ab2cc7aba01a4f52d71adcfe\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3f0ab59e6537c6a8f9e1b355b48f9c05a76e8563\",\n                            \"lessThan\": \"5a03a2ee17e8259dde631ed84fd8322db06cb2ae\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3f0ab59e6537c6a8f9e1b355b48f9c05a76e8563\",\n                            \"lessThan\": \"40f0b1047918539f0b0f795ac65e35336b4c2c78\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"f31398570acf0f0804c644006f7bfa9067106b0a\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"401ad99a5ae7180dd9449eac104cb755f442e7f3\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"e68dd80ba498265d2266b12dc3459164f4ff0c4a\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5.10.229\",\n                            \"lessThan\": \"5.10.261\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.170\",\n                            \"lessThan\": \"5.15.212\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.115\",\n                            \"lessThan\": \"6.1.178\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.59\",\n                            \"lessThan\": \"6.6.145\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"4.19.323\",\n                            \"lessThan\": \"4.20\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.4.285\",\n                            \"lessThan\": \"5.5\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.11.6\",\n                            \"lessThan\": \"6.12\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\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                        \"include/net/xfrm.h\",\n                        \"net/xfrm/xfrm_policy.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.12\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.12\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.261\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.212\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.178\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.145\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.97\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.40\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.1.5\",\n                            \"lessThanOrEqual\": \"7.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2\",\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/87a5bbccc7ff4edb3f42fea387124237d2ba91ee","https://git.kernel.org/stable/c/bd7f202cf77556cff59f68dc30e4cdf40cb6e33b","https://git.kernel.org/stable/c/a3968ad4195d72c8fddcc6c0ef39da95ac98711a","https://git.kernel.org/stable/c/efa9e3b9f3dea2e1ea4c7edf4edc863faef85986","https://git.kernel.org/stable/c/78783fefdc8f36879b1a17efa0d3195ea5f2dc5f","https://git.kernel.org/stable/c/6d99379c58f7f1c6ab2cc7aba01a4f52d71adcfe","https://git.kernel.org/stable/c/5a03a2ee17e8259dde631ed84fd8322db06cb2ae","https://git.kernel.org/stable/c/40f0b1047918539f0b0f795ac65e35336b4c2c78"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-72450","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-72450","identifiers":["CVE-2026-72450"]},"retained":false,"historicalAffected":[]}],"coverage":[]}