{"api_version":"1","generated_at":"2026-07-20T14:43:29+00:00","cve":"CVE-2026-64106","urls":{"html":"https://cve.report/CVE-2026-64106","api":"https://cve.report/api/cve/CVE-2026-64106.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-64106","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-64106"},"summary":{"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":"PUBLISHED","assigner":"Linux","published_at":"2026-07-19 16:17:51","updated_at":"2026-07-19 16:17:51"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/dab9f93251b2c86a033de6098d0c73afddd55d4a","name":"https://git.kernel.org/stable/c/dab9f93251b2c86a033de6098d0c73afddd55d4a","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/0680f511926589206f81f57f76ce131d7741a316","name":"https://git.kernel.org/stable/c/0680f511926589206f81f57f76ce131d7741a316","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/b94538186a3eae3763b8f96dacd610920a865aa7","name":"https://git.kernel.org/stable/c/b94538186a3eae3763b8f96dacd610920a865aa7","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/1716b7fea2ead941a0dfac06c4504a3437cdf00d","name":"https://git.kernel.org/stable/c/1716b7fea2ead941a0dfac06c4504a3437cdf00d","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/9ce754ed8e7ab4e3999767ce1505f85c449ccb07","name":"https://git.kernel.org/stable/c/9ce754ed8e7ab4e3999767ce1505f85c449ccb07","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/8bcd15b690a390241179516af1b6ae49ebfd9d95","name":"https://git.kernel.org/stable/c/8bcd15b690a390241179516af1b6ae49ebfd9d95","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-64106","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-64106","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 57a9a117154c93539e33161dd318e6aeb8c04efa 1716b7fea2ead941a0dfac06c4504a3437cdf00d git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 57a9a117154c93539e33161dd318e6aeb8c04efa dab9f93251b2c86a033de6098d0c73afddd55d4a git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 57a9a117154c93539e33161dd318e6aeb8c04efa b94538186a3eae3763b8f96dacd610920a865aa7 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 57a9a117154c93539e33161dd318e6aeb8c04efa 0680f511926589206f81f57f76ce131d7741a316 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 57a9a117154c93539e33161dd318e6aeb8c04efa 8bcd15b690a390241179516af1b6ae49ebfd9d95 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 57a9a117154c93539e33161dd318e6aeb8c04efa 9ce754ed8e7ab4e3999767ce1505f85c449ccb07 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 4.12","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 4.12 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.175 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.142 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.92 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.34 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0.11 7.0.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["arch/arm64/kvm/vgic/vgic-its.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"1716b7fea2ead941a0dfac06c4504a3437cdf00d","status":"affected","version":"57a9a117154c93539e33161dd318e6aeb8c04efa","versionType":"git"},{"lessThan":"dab9f93251b2c86a033de6098d0c73afddd55d4a","status":"affected","version":"57a9a117154c93539e33161dd318e6aeb8c04efa","versionType":"git"},{"lessThan":"b94538186a3eae3763b8f96dacd610920a865aa7","status":"affected","version":"57a9a117154c93539e33161dd318e6aeb8c04efa","versionType":"git"},{"lessThan":"0680f511926589206f81f57f76ce131d7741a316","status":"affected","version":"57a9a117154c93539e33161dd318e6aeb8c04efa","versionType":"git"},{"lessThan":"8bcd15b690a390241179516af1b6ae49ebfd9d95","status":"affected","version":"57a9a117154c93539e33161dd318e6aeb8c04efa","versionType":"git"},{"lessThan":"9ce754ed8e7ab4e3999767ce1505f85c449ccb07","status":"affected","version":"57a9a117154c93539e33161dd318e6aeb8c04efa","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["arch/arm64/kvm/vgic/vgic-its.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"4.12"},{"lessThan":"4.12","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.175","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.142","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.92","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.34","versionType":"semver"},{"lessThanOrEqual":"7.0.*","status":"unaffected","version":"7.0.11","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.175","versionStartIncluding":"4.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.142","versionStartIncluding":"4.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.92","versionStartIncluding":"4.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.34","versionStartIncluding":"4.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0.11","versionStartIncluding":"4.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1","versionStartIncluding":"4.12","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"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."}],"providerMetadata":{"dateUpdated":"2026-07-19T15:40:09.344Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/1716b7fea2ead941a0dfac06c4504a3437cdf00d"},{"url":"https://git.kernel.org/stable/c/dab9f93251b2c86a033de6098d0c73afddd55d4a"},{"url":"https://git.kernel.org/stable/c/b94538186a3eae3763b8f96dacd610920a865aa7"},{"url":"https://git.kernel.org/stable/c/0680f511926589206f81f57f76ce131d7741a316"},{"url":"https://git.kernel.org/stable/c/8bcd15b690a390241179516af1b6ae49ebfd9d95"},{"url":"https://git.kernel.org/stable/c/9ce754ed8e7ab4e3999767ce1505f85c449ccb07"}],"title":"KVM: arm64: vgic-its: Reject restored DTE with out-of-range num_eventid_bits","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-64106","datePublished":"2026-07-19T15:40:09.344Z","dateReserved":"2026-07-19T07:54:57.034Z","dateUpdated":"2026-07-19T15:40:09.344Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-07-19 16:17:51","lastModifiedDate":"2026-07-19 16:17:51","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"64106","Ordinal":"1","Title":"KVM: arm64: vgic-its: Reject restored DTE with out-of-range num_","CVE":"CVE-2026-64106","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"64106","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"KVM: arm64: vgic-its: Reject restored DTE with out-of-range num_"}]}}}