{"id":"CVE-2026-46032","title":"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 ig…","summary":"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 ig…","severity":"medium","cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","vendor":"linux","product":"linux_kernel","affected":["linux_kernel >= 5.9, < 7.0.4"],"patched":["linux_kernel 7.0.4"],"published":"2026-05-27","updated":"2026-10-15","sourceUpdated":"2026-10-15T11:17:31.810","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-46032","references":[{"url":"https://git.kernel.org/stable/c/5d291ef0585ed880ed4dd71ea1a5965e0a65fb53","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/9a738cf170a4a2332ea3a15e23ec65b5757fe4a1","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/b0eb0a8959ac2b808eb11548d002fe1f9b5650cc","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"epss":0.00155,"epssPercentile":0.04141,"ingestedAt":"2026-10-15T11:00:41.704Z","slug":"CVE-2026-46032","body":"## Overview\n\nIn 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.\n\n## Affected\n\n- `linux_kernel >= 5.9, < 7.0.4`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `linux_kernel 7.0.4`","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":222290,"id":"CVE-2026-46032","ts":1792065868637,"field":"cvss","old":null,"new":"5.5"},{"seq":222289,"id":"CVE-2026-46032","ts":1792065868637,"field":"severity","old":"none","new":"medium"}]}