{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-46032","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-05-13T15:03:33.093Z","datePublished":"2026-05-27T12:56:41.159Z","dateUpdated":"2026-11-06T16:13:33.069Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-10-30T12:25:57.350Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: nSVM: Triple fault if restore host CR3 fails on nested #VMEXIT\n\nIf loading L1's CR3 fails on a nested #VMEXIT, nested_svm_vmexit()\nreturns an error code that is ignored by most callers, and continues to\nrun L1 with corrupted state. A sane recovery is not possible in this\ncase, and HW behavior is to cause a shutdown. Inject a triple fault\ninstead, and do not return early from nested_svm_vmexit(). Continue\ncleaning up the vCPU state (e.g. clear pending exceptions), to handle\nthe failure as gracefully as possible.\n\nFrom the APM:\n\n  Upon #VMEXIT, the processor performs the following actions in order to\n  return to the host execution context:\n\n  ...\n\n  if (illegal host state loaded, or exception while loading host state)\n      shutdown\n  else\n      execute first host instruction following the VMRUN\n\nRemove the return value of nested_svm_vmexit(), which is mostly\nunchecked anyway."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/x86/kvm/svm/nested.c","arch/x86/kvm/svm/svm.c","arch/x86/kvm/svm/svm.h"],"versions":[{"version":"d82aaef9c88aa27bce63751d6d6329920b1fe8da","lessThan":"e6318570a9b4e137b0b744832b920b38bb069561","status":"affected","versionType":"git"},{"version":"d82aaef9c88aa27bce63751d6d6329920b1fe8da","lessThan":"2e661773890e6ba6b16064fad961da3dd311be43","status":"affected","versionType":"git"},{"version":"d82aaef9c88aa27bce63751d6d6329920b1fe8da","lessThan":"af79992ecdb6817970d757fb5d853b8d9b55a0d6","status":"affected","versionType":"git"},{"version":"d82aaef9c88aa27bce63751d6d6329920b1fe8da","lessThan":"b0eb0a8959ac2b808eb11548d002fe1f9b5650cc","status":"affected","versionType":"git"},{"version":"d82aaef9c88aa27bce63751d6d6329920b1fe8da","lessThan":"9a738cf170a4a2332ea3a15e23ec65b5757fe4a1","status":"affected","versionType":"git"},{"version":"d82aaef9c88aa27bce63751d6d6329920b1fe8da","lessThan":"5d291ef0585ed880ed4dd71ea1a5965e0a65fb53","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/x86/kvm/svm/nested.c","arch/x86/kvm/svm/svm.c","arch/x86/kvm/svm/svm.h"],"versions":[{"version":"5.9","status":"affected"},{"version":"0","lessThan":"5.9","status":"unaffected","versionType":"semver"},{"version":"6.1.191","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.160","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.114","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.57","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.0.4","lessThanOrEqual":"7.0.*","status":"unaffected","versionType":"semver"},{"version":"7.1","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.9","versionEndExcluding":"6.1.191"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.9","versionEndExcluding":"6.6.160"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.9","versionEndExcluding":"6.12.114"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.9","versionEndExcluding":"6.18.57"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.9","versionEndExcluding":"7.0.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.9","versionEndExcluding":"7.1"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/e6318570a9b4e137b0b744832b920b38bb069561"},{"url":"https://git.kernel.org/stable/c/2e661773890e6ba6b16064fad961da3dd311be43"},{"url":"https://git.kernel.org/stable/c/af79992ecdb6817970d757fb5d853b8d9b55a0d6"},{"url":"https://git.kernel.org/stable/c/b0eb0a8959ac2b808eb11548d002fe1f9b5650cc"},{"url":"https://git.kernel.org/stable/c/9a738cf170a4a2332ea3a15e23ec65b5757fe4a1"},{"url":"https://git.kernel.org/stable/c/5d291ef0585ed880ed4dd71ea1a5965e0a65fb53"}],"title":"KVM: nSVM: Triple fault if restore host CR3 fails on nested #VMEXIT","x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2026-46032","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2026-11-06T16:05:49.470870Z"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-11-06T16:13:33.069Z"}}]}}