{"id":"CVE-2026-64106","revision":null,"records":[{"revision":"849cadd28fd2483ea7049abe8e009fa8","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-64106","aliases":[],"title":"KVM: arm64: vgic-its: Reject restored DTE with out-of-range num_eventid_bits","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: arm64: vgic-its: Reject restored DTE with out-of-range num_eventid_bits\n\nUserspace can restore an ITS Device Table Entry whose Size field encodes\nmore EventID bits than the virtual ITS supports. The live MAPD path\nrejects that state, but vgic_its_restore_dte() accepts it and stores the\nout-of-range value in dev->num_eventid_bits.\n\nReject restored DTEs with num_eventid_bits > VITS_TYPER_IDBITS before\nallocating the device. This mirrors the MAPD check and prevents the\nrestored state from reaching vgic_its_restore_itt(), where the unchecked\nvalue can be converted into an oversized scan_its_table() range.","state":0,"publishedAt":"2026-07-19T15:40:09.344+00:00","modifiedAt":"2026-10-19T20:28:12.062+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 \"arch/arm64/kvm/vgic/vgic-its.c\"\n ],\n \"versions\": [\n {\n \"version\": \"57a9a117154c93539e33161dd318e6aeb8c04efa\",\n \"lessThan\": \"1716b7fea2ead941a0dfac06c4504a3437cdf00d\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"57a9a117154c93539e33161dd318e6aeb8c04efa\",\n \"lessThan\": \"dab9f93251b2c86a033de6098d0c73afddd55d4a\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"57a9a117154c93539e33161dd318e6aeb8c04efa\",\n \"lessThan\": \"b94538186a3eae3763b8f96dacd610920a865aa7\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"57a9a117154c93539e33161dd318e6aeb8c04efa\",\n \"lessThan\": \"0680f511926589206f81f57f76ce131d7741a316\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"57a9a117154c93539e33161dd318e6aeb8c04efa\",\n \"lessThan\": \"8bcd15b690a390241179516af1b6ae49ebfd9d95\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"57a9a117154c93539e33161dd318e6aeb8c04efa\",\n \"lessThan\": \"9ce754ed8e7ab4e3999767ce1505f85c449ccb07\",\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 \"arch/arm64/kvm/vgic/vgic-its.c\"\n ],\n \"versions\": [\n {\n \"version\": \"4.12\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"0\",\n \"lessThan\": \"4.12\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.1.175\",\n \"lessThanOrEqual\": \"6.1.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.6.142\",\n \"lessThanOrEqual\": \"6.6.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.12.92\",\n \"lessThanOrEqual\": \"6.12.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.18.34\",\n \"lessThanOrEqual\": \"6.18.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"7.0.11\",\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:N/UI:N/S:C/C:H/I:N/A:H","score":9,"severity":"CRITICAL"}],"references":["https://git.kernel.org/stable/c/1716b7fea2ead941a0dfac06c4504a3437cdf00d","https://git.kernel.org/stable/c/dab9f93251b2c86a033de6098d0c73afddd55d4a","https://git.kernel.org/stable/c/b94538186a3eae3763b8f96dacd610920a865aa7","https://git.kernel.org/stable/c/0680f511926589206f81f57f76ce131d7741a316","https://git.kernel.org/stable/c/8bcd15b690a390241179516af1b6ae49ebfd9d95","https://git.kernel.org/stable/c/9ce754ed8e7ab4e3999767ce1505f85c449ccb07"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-64106","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-64106","identifiers":["CVE-2026-64106"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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Not a global EUVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-db1b57b5c8cf41498e207884b3f1235b","complete":true,"records":13654,"lastAttemptAt":"2026-11-08T18:47:45.2749951+00:00","lastSuccessAt":"2026-11-08T17:47:46.718+00:00","error":null,"lastVerifiedAt":"2026-11-08T17:47:46.718+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13706,"expectedIdentifiers":13706,"failedIdentifiers":0},{"source":"first-epss:nuget","scope":"FIRST EPSS for explicit CVE aliases in the collected public NuGet archive. Not a global EPSS backfill.","generation":"2026-11-08T18:47:41.4173610+00:00","complete":true,"records":1096,"lastAttemptAt":"2026-11-08T18:47:41.417361+00:00","lastSuccessAt":"2026-11-08T18:47:41.7296264+00:00","error":null,"lastVerifiedAt":"2026-11-08T18:47:41.7296273+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"nvd","scope":"Rolling NVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global NVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. 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