{
  "cveId": "CVE-2026-46032",
  "url": "https://patchblox.com/security/cve/CVE-2026-46032",
  "summary": "CVE-2026-46032 is fixed in linux on 1 platform, first by DEBIAN-CVE-2026-46032, released May 27, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "KVM: nSVM: Triple fault if restore host CR3 fails on nested #VMEXIT",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  KVM: nSVM: Triple fault if restore host CR3 fails on nested #VMEXIT  If loading L1\u0027s CR3 fails on a nested #VMEXIT, nested_svm_vmexit() returns an error code that is ignored by most callers, and continues to run L1 with corrupted state. A sane recovery is not possible in this case, and HW behavior is to cause a shutdown. Inject a triple fault instead, and do not return early from nested_svm_vmexit(). Continue cleaning up the vCPU state (e.g. clear pending exceptions), to handle the failure as gracefully as possible.  From the APM:    Upon #VMEXIT, the processor performs the following actions in order to   return to the host execution context:    ...    if (illegal host state loaded, or exception while loading host state)       shutdown   else       execute first host instruction following the VMRUN  Remove the return value of nested_svm_vmexit(), which is mostly unchecked anyway.",
  "published": "2026-05-27T14:17:22Z",
  "severity": "Moderate",
  "cvss": 7,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
  "epss": 0.0013,
  "epssPercentile": 0.0269,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-46032",
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.12.115-2",
      "fix": "DEBIAN-CVE-2026-46032",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-46032",
      "released": "2026-05-27T17:38:13Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.0.4-1",
      "fix": "DEBIAN-CVE-2026-46032",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-46032",
      "released": "2026-05-27T17:38:13Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T06:59:42Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}