{"id":"CVE-2026-72350","revision":"1c3501ec971143a1a6642e00702b4874","records":[{"revision":"1c3501ec971143a1a6642e00702b4874","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-72350","aliases":[],"title":"netfilter: xt_u32: reject invalid shift counts","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: xt_u32: reject invalid shift counts\n\nu32_match_it() executes rule-supplied shift operands on a 32-bit\nvalue. A malformed u32 rule can provide a shift count of 32 or more,\ntriggering an undefined shift out-of-bounds during packet evaluation.\n\nValidate XT_U32_LEFTSH and XT_U32_RIGHTSH operands in\nu32_mt_checkentry() and reject malformed rules before they reach the\npacket path.","state":0,"publishedAt":"2026-08-15T05:55:53.532+00:00","modifiedAt":"2026-10-16T18:55:19.841+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/netfilter/xt_u32.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"1b50b8a371e90a5e110f466e4ac02cf6b5f681de\",\n                            \"lessThan\": \"ca7c92d9701249e6daf132087756a88cbf2bb2a3\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"1b50b8a371e90a5e110f466e4ac02cf6b5f681de\",\n                            \"lessThan\": \"b33b44250d57ab0e5a1e2571b5285fb0d0a7f382\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"1b50b8a371e90a5e110f466e4ac02cf6b5f681de\",\n                            \"lessThan\": \"728f479dc0447ae7eaef87926ff49142e415a811\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"1b50b8a371e90a5e110f466e4ac02cf6b5f681de\",\n                            \"lessThan\": \"0a8b7a6d763775709c601f584e709ae48bcc000a\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"1b50b8a371e90a5e110f466e4ac02cf6b5f681de\",\n                            \"lessThan\": \"cce42014415cecd98aa49b3950e7b02ee7c81268\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"1b50b8a371e90a5e110f466e4ac02cf6b5f681de\",\n                            \"lessThan\": \"a597a722fb71a534138c20359b655726622b5f17\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"1b50b8a371e90a5e110f466e4ac02cf6b5f681de\",\n                            \"lessThan\": \"00d034fe8230dfc5832fe011ff2d81c1a2cc7a29\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"1b50b8a371e90a5e110f466e4ac02cf6b5f681de\",\n                            \"lessThan\": \"64cdf7d30ac18e43df6c48004435febb965809a8\",\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/netfilter/xt_u32.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"2.6.23\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"2.6.23\",\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/ca7c92d9701249e6daf132087756a88cbf2bb2a3","https://git.kernel.org/stable/c/b33b44250d57ab0e5a1e2571b5285fb0d0a7f382","https://git.kernel.org/stable/c/728f479dc0447ae7eaef87926ff49142e415a811","https://git.kernel.org/stable/c/0a8b7a6d763775709c601f584e709ae48bcc000a","https://git.kernel.org/stable/c/cce42014415cecd98aa49b3950e7b02ee7c81268","https://git.kernel.org/stable/c/a597a722fb71a534138c20359b655726622b5f17","https://git.kernel.org/stable/c/00d034fe8230dfc5832fe011ff2d81c1a2cc7a29","https://git.kernel.org/stable/c/64cdf7d30ac18e43df6c48004435febb965809a8"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-72350","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-72350","identifiers":["CVE-2026-72350"]},"retained":false,"historicalAffected":[]}],"coverage":[]}