{"id":"CVE-2026-46331","revision":null,"records":[{"revision":"11c7ad7730f549a18acbd45fc107d9ec","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-46331","aliases":[],"title":"net/sched: fix pedit partial COW leading to page cache corruption","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet/sched: fix pedit partial COW leading to page cache corruption\n\ntcf_pedit_act() computes the COW range for skb_ensure_writable()\nonce before the key loop using tcfp_off_max_hint, but the hint does\nnot account for the runtime header offset added by typed keys. This\ncan leave part of the write region un-COW'd.\n\nFix by moving skb_ensure_writable() inside the per-key loop where\nthe actual write offset is known, and add overflow checking on the\noffset arithmetic. For negative offsets (e.g. Ethernet header edits\nat ingress), use skb_cow() to COW the headroom instead. Guard\noffset_valid() against INT_MIN, where negation is undefined.","state":0,"publishedAt":"2026-06-16T06:26:21.066+00:00","modifiedAt":"2026-10-15T01:21:40.294+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/tc_act/tc_pedit.h\",\n \"net/sched/act_pedit.c\"\n ],\n \"versions\": [\n {\n \"version\": \"abe35bf3be51482593076d516a680d79e5fbc8e1\",\n \"lessThan\": \"544d857b42a1734b923040e13aa61a6fd4746cf2\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"b773640d5bb9e2acfd91e2695717af04d47aa116\",\n \"lessThan\": \"d5d01d35a5a7d36f7cb679b67d9cbdd5205672dc\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"8b796475fd7882663a870456466a4fb315cc1bd6\",\n \"lessThan\": \"a071e057518decc5e3bec89855758f5f8786f2c5\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"8b796475fd7882663a870456466a4fb315cc1bd6\",\n \"lessThan\": \"b685d6ef6f07a3b5ce814565a25f39f2157538a5\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"8b796475fd7882663a870456466a4fb315cc1bd6\",\n \"lessThan\": \"2bec122b9fb91507a758ab5e3e5c4fbe7cb3f61b\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"8b796475fd7882663a870456466a4fb315cc1bd6\",\n \"lessThan\": \"b198ed4e52580a7238c7c7082f03906f8b310313\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"8b796475fd7882663a870456466a4fb315cc1bd6\",\n \"lessThan\": \"3dee9d0c198faeb95d052c1b94c2958751a28512\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"8b796475fd7882663a870456466a4fb315cc1bd6\",\n \"lessThan\": \"899ee91156e57784090c5565e4f31bd7dbffbc5a\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"d0c38a914b0c4c21d553da801003d36979016726\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"2ec2dd7d51a9320151f275ddbb2b53260fb32ca1\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"c19cc520b3d69904e9518d401ad0df7f4702aca0\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"5.10.117\",\n \"lessThan\": \"5.10.260\",\n \"status\": \"affected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.15.41\",\n \"lessThan\": \"5.15.211\",\n \"status\": \"affected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"4.19.244\",\n \"lessThan\": \"4.20\",\n \"status\": \"affected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.4.195\",\n \"lessThan\": \"5.5\",\n \"status\": \"affected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.17.9\",\n \"lessThan\": \"5.18\",\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/tc_act/tc_pedit.h\",\n \"net/sched/act_pedit.c\"\n ],\n \"versions\": [\n {\n \"version\": \"5.18\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"0\",\n \"lessThan\": \"5.18\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.10.260\",\n \"lessThanOrEqual\": \"5.10.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.15.211\",\n \"lessThanOrEqual\": \"5.15.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.1.177\",\n \"lessThanOrEqual\": \"6.1.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.6.144\",\n \"lessThanOrEqual\": \"6.6.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.12.94\",\n \"lessThanOrEqual\": \"6.12.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.18.36\",\n \"lessThanOrEqual\": \"6.18.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"7.0.13\",\n \"lessThanOrEqual\": \"7.0.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"7.1\",\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/544d857b42a1734b923040e13aa61a6fd4746cf2","https://git.kernel.org/stable/c/d5d01d35a5a7d36f7cb679b67d9cbdd5205672dc","https://git.kernel.org/stable/c/a071e057518decc5e3bec89855758f5f8786f2c5","https://git.kernel.org/stable/c/b685d6ef6f07a3b5ce814565a25f39f2157538a5","https://git.kernel.org/stable/c/2bec122b9fb91507a758ab5e3e5c4fbe7cb3f61b","https://git.kernel.org/stable/c/b198ed4e52580a7238c7c7082f03906f8b310313","https://git.kernel.org/stable/c/3dee9d0c198faeb95d052c1b94c2958751a28512","https://git.kernel.org/stable/c/899ee91156e57784090c5565e4f31bd7dbffbc5a"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-46331","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-46331","identifiers":["CVE-2026-46331"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all 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