{"api_version":"1","generated_at":"2026-10-23T04:27:58+00:00","cve":"CVE-2026-89931","urls":{"html":"https://cve.report/CVE-2026-89931","api":"https://cve.report/api/cve/CVE-2026-89931.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-89931","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-89931"},"summary":{"title":"KVM: nVMX: Ensure KVM_REQ_GET_NESTED_STATE_PAGES is cleared on VM-Exit","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: nVMX: Ensure KVM_REQ_GET_NESTED_STATE_PAGES is cleared on VM-Exit\n\nAlways check and clear KVM_REQ_GET_NESTED_STATE_PAGES when emulating a\nnested VM-Exit to ensure the request is cleared, even when KVM was built\nwith CONFIG_KVM_HYPERV=n, as KVM subtly relies on the \"check\" to clear\nthe flag and thus avoid double-mapping the vmcs12 pages, e.g. if KVM\nmanages to bail from VM-Enter without processing the request, and then\nemulates VMLAUNCH or VMRESUME.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-09-16 11:17:02","updated_at":"2026-10-19 09:18:38"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/bbec4adc2f340d85f4a77a9ddcddaa6b1f4639c5","name":"https://git.kernel.org/stable/c/bbec4adc2f340d85f4a77a9ddcddaa6b1f4639c5","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/11722439fb206c88e6f31be54173efa9880b4ccb","name":"https://git.kernel.org/stable/c/11722439fb206c88e6f31be54173efa9880b4ccb","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/ae190f2439ca30067927077bf570d4c5edf07a0f","name":"https://git.kernel.org/stable/c/ae190f2439ca30067927077bf570d4c5edf07a0f","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/674a3244f07f323f21a106a7bdcaebb6db6a5058","name":"https://git.kernel.org/stable/c/674a3244f07f323f21a106a7bdcaebb6db6a5058","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-89931","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-89931","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b4f69df0f65e97fec439130a0d0a8b9c7cc02df2 ae190f2439ca30067927077bf570d4c5edf07a0f git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b4f69df0f65e97fec439130a0d0a8b9c7cc02df2 674a3244f07f323f21a106a7bdcaebb6db6a5058 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b4f69df0f65e97fec439130a0d0a8b9c7cc02df2 bbec4adc2f340d85f4a77a9ddcddaa6b1f4639c5 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b4f69df0f65e97fec439130a0d0a8b9c7cc02df2 11722439fb206c88e6f31be54173efa9880b4ccb git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.8","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.8 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.110 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.51 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.5 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3 * 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/x86/kvm/vmx/nested.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"ae190f2439ca30067927077bf570d4c5edf07a0f","status":"affected","version":"b4f69df0f65e97fec439130a0d0a8b9c7cc02df2","versionType":"git"},{"lessThan":"674a3244f07f323f21a106a7bdcaebb6db6a5058","status":"affected","version":"b4f69df0f65e97fec439130a0d0a8b9c7cc02df2","versionType":"git"},{"lessThan":"bbec4adc2f340d85f4a77a9ddcddaa6b1f4639c5","status":"affected","version":"b4f69df0f65e97fec439130a0d0a8b9c7cc02df2","versionType":"git"},{"lessThan":"11722439fb206c88e6f31be54173efa9880b4ccb","status":"affected","version":"b4f69df0f65e97fec439130a0d0a8b9c7cc02df2","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["arch/x86/kvm/vmx/nested.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.8"},{"lessThan":"6.8","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.110","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.51","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.5","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.110","versionStartIncluding":"6.8","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.51","versionStartIncluding":"6.8","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.5","versionStartIncluding":"6.8","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3","versionStartIncluding":"6.8","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: nVMX: Ensure KVM_REQ_GET_NESTED_STATE_PAGES is cleared on VM-Exit\n\nAlways check and clear KVM_REQ_GET_NESTED_STATE_PAGES when emulating a\nnested VM-Exit to ensure the request is cleared, even when KVM was built\nwith CONFIG_KVM_HYPERV=n, as KVM subtly relies on the \"check\" to clear\nthe flag and thus avoid double-mapping the vmcs12 pages, e.g. if KVM\nmanages to bail from VM-Enter without processing the request, and then\nemulates VMLAUNCH or VMRESUME."}],"providerMetadata":{"dateUpdated":"2026-10-19T08:55:05.944Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/ae190f2439ca30067927077bf570d4c5edf07a0f"},{"url":"https://git.kernel.org/stable/c/674a3244f07f323f21a106a7bdcaebb6db6a5058"},{"url":"https://git.kernel.org/stable/c/bbec4adc2f340d85f4a77a9ddcddaa6b1f4639c5"},{"url":"https://git.kernel.org/stable/c/11722439fb206c88e6f31be54173efa9880b4ccb"}],"title":"KVM: nVMX: Ensure KVM_REQ_GET_NESTED_STATE_PAGES is cleared on VM-Exit","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-89931","datePublished":"2026-09-16T10:32:22.202Z","dateReserved":"2026-09-11T19:38:34.776Z","dateUpdated":"2026-10-19T08:55:05.944Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-16 11:17:02","lastModifiedDate":"2026-10-19 09:18:38","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"89931","Ordinal":"1","Title":"KVM: nVMX: Ensure KVM_REQ_GET_NESTED_STATE_PAGES is cleared on V","CVE":"CVE-2026-89931","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"89931","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: nVMX: Ensure KVM_REQ_GET_NESTED_STATE_PAGES is cleared on VM-Exit\n\nAlways check and clear KVM_REQ_GET_NESTED_STATE_PAGES when emulating a\nnested VM-Exit to ensure the request is cleared, even when KVM was built\nwith CONFIG_KVM_HYPERV=n, as KVM subtly relies on the \"check\" to clear\nthe flag and thus avoid double-mapping the vmcs12 pages, e.g. if KVM\nmanages to bail from VM-Enter without processing the request, and then\nemulates VMLAUNCH or VMRESUME.","Type":"Description","Title":"KVM: nVMX: Ensure KVM_REQ_GET_NESTED_STATE_PAGES is cleared on V"}]}}}