{"api_version":"1","generated_at":"2026-08-04T13:51:35+00:00","cve":"CVE-2026-64562","urls":{"html":"https://cve.report/CVE-2026-64562","api":"https://cve.report/api/cve/CVE-2026-64562.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-64562","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-64562"},"summary":{"title":"KVM: nVMX: Hide shadow VMCS right after VMCLEAR","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: nVMX: Hide shadow VMCS right after VMCLEAR\n\nfree_nested() frees the shadow VMCS while vmcs01 still points to it. But\nbecause it is asynchronous with respect to loaded_vmcs_clear(), the vCPU\nmight migrate before the pointer is cleared and __loaded_vmcs_clear()\nmay then execute VMCLEAR.\n\nThe VMCS needs to stay attached until its explicit VMCLEAR completes, but\nthen it can be hidden and the page safely freed.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-08-04 07:16:31","updated_at":"2026-08-04 07:16:31"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/1dabef6e206568bf9d9ade74f6e56a48ea35695d","name":"https://git.kernel.org/stable/c/1dabef6e206568bf9d9ade74f6e56a48ea35695d","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/8001d2ce9d9bd09118ce523aef595aa094573ae3","name":"https://git.kernel.org/stable/c/8001d2ce9d9bd09118ce523aef595aa094573ae3","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/af56298e9d86e6098cd1d2e155cb2949b7c45412","name":"https://git.kernel.org/stable/c/af56298e9d86e6098cd1d2e155cb2949b7c45412","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/622ebfac01ba4f9c0060cebd41257fe46fc4a0b3","name":"https://git.kernel.org/stable/c/622ebfac01ba4f9c0060cebd41257fe46fc4a0b3","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/589419470030a89f16cf19300658b6dc644ca946","name":"https://git.kernel.org/stable/c/589419470030a89f16cf19300658b6dc644ca946","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-64562","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-64562","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 355f4fb1405ec29d0fac49b4d41fcd78cbd455d5 af56298e9d86e6098cd1d2e155cb2949b7c45412 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 355f4fb1405ec29d0fac49b4d41fcd78cbd455d5 589419470030a89f16cf19300658b6dc644ca946 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 355f4fb1405ec29d0fac49b4d41fcd78cbd455d5 8001d2ce9d9bd09118ce523aef595aa094573ae3 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 355f4fb1405ec29d0fac49b4d41fcd78cbd455d5 1dabef6e206568bf9d9ade74f6e56a48ea35695d git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 355f4fb1405ec29d0fac49b4d41fcd78cbd455d5 622ebfac01ba4f9c0060cebd41257fe46fc4a0b3 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 4.9","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 4.9 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.148 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.101 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.42 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1.6 7.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2-rc5 * 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":"af56298e9d86e6098cd1d2e155cb2949b7c45412","status":"affected","version":"355f4fb1405ec29d0fac49b4d41fcd78cbd455d5","versionType":"git"},{"lessThan":"589419470030a89f16cf19300658b6dc644ca946","status":"affected","version":"355f4fb1405ec29d0fac49b4d41fcd78cbd455d5","versionType":"git"},{"lessThan":"8001d2ce9d9bd09118ce523aef595aa094573ae3","status":"affected","version":"355f4fb1405ec29d0fac49b4d41fcd78cbd455d5","versionType":"git"},{"lessThan":"1dabef6e206568bf9d9ade74f6e56a48ea35695d","status":"affected","version":"355f4fb1405ec29d0fac49b4d41fcd78cbd455d5","versionType":"git"},{"lessThan":"622ebfac01ba4f9c0060cebd41257fe46fc4a0b3","status":"affected","version":"355f4fb1405ec29d0fac49b4d41fcd78cbd455d5","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":"4.9"},{"lessThan":"4.9","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.148","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.101","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.42","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.6","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2-rc5","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.148","versionStartIncluding":"4.9","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.101","versionStartIncluding":"4.9","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.42","versionStartIncluding":"4.9","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1.6","versionStartIncluding":"4.9","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2-rc5","versionStartIncluding":"4.9","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: nVMX: Hide shadow VMCS right after VMCLEAR\n\nfree_nested() frees the shadow VMCS while vmcs01 still points to it. But\nbecause it is asynchronous with respect to loaded_vmcs_clear(), the vCPU\nmight migrate before the pointer is cleared and __loaded_vmcs_clear()\nmay then execute VMCLEAR.\n\nThe VMCS needs to stay attached until its explicit VMCLEAR completes, but\nthen it can be hidden and the page safely freed."}],"providerMetadata":{"dateUpdated":"2026-08-04T06:23:21.855Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/af56298e9d86e6098cd1d2e155cb2949b7c45412"},{"url":"https://git.kernel.org/stable/c/589419470030a89f16cf19300658b6dc644ca946"},{"url":"https://git.kernel.org/stable/c/8001d2ce9d9bd09118ce523aef595aa094573ae3"},{"url":"https://git.kernel.org/stable/c/1dabef6e206568bf9d9ade74f6e56a48ea35695d"},{"url":"https://git.kernel.org/stable/c/622ebfac01ba4f9c0060cebd41257fe46fc4a0b3"}],"title":"KVM: nVMX: Hide shadow VMCS right after VMCLEAR","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-64562","datePublished":"2026-08-04T06:23:21.855Z","dateReserved":"2026-07-19T15:36:31.796Z","dateUpdated":"2026-08-04T06:23:21.855Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-08-04 07:16:31","lastModifiedDate":"2026-08-04 07:16:31","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"64562","Ordinal":"1","Title":"KVM: nVMX: Hide shadow VMCS right after VMCLEAR","CVE":"CVE-2026-64562","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"64562","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: nVMX: Hide shadow VMCS right after VMCLEAR\n\nfree_nested() frees the shadow VMCS while vmcs01 still points to it. But\nbecause it is asynchronous with respect to loaded_vmcs_clear(), the vCPU\nmight migrate before the pointer is cleared and __loaded_vmcs_clear()\nmay then execute VMCLEAR.\n\nThe VMCS needs to stay attached until its explicit VMCLEAR completes, but\nthen it can be hidden and the page safely freed.","Type":"Description","Title":"KVM: nVMX: Hide shadow VMCS right after VMCLEAR"}]}}}