CVE-2026-89931

Full vulnerability record from the local CVENow database.

Description

In the Linux kernel, the following vulnerability has been resolved: KVM: nVMX: Ensure KVM_REQ_GET_NESTED_STATE_PAGES is cleared on VM-Exit Always check and clear KVM_REQ_GET_NESTED_STATE_PAGES when emulating a nested VM-Exit to ensure the request is cleared, even when KVM was built with CONFIG_KVM_HYPERV=n, as KVM subtly relies on the "check" to clear the flag and thus avoid double-mapping the vmcs12 pages, e.g. if KVM manages to bail from VM-Enter without processing the request, and then emulates VMLAUNCH or VMRESUME.

Severity

Not scored

CVSS score

Not available

Vulnerability status

Received

Source identifier

416baaa9-dc9f-4396-8d5f-8c081fb06d67

Published

2026-09-16 11:17:02.427000

Last modified

2026-10-19 09:18:38.843000

View original CVE JSON

{
  "id": "CVE-2026-89931",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2026-09-16T11:17:02.427",
  "lastModified": "2026-10-19T09:18:38.843",
  "vulnStatus": "Received",
  "cveTags": [],
  "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."
    }
  ],
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "programFiles": [
            "arch/x86/kvm/vmx/nested.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "b4f69df0f65e97fec439130a0d0a8b9c7cc02df2",
              "lessThan": "ae190f2439ca30067927077bf570d4c5edf07a0f",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "b4f69df0f65e97fec439130a0d0a8b9c7cc02df2",
              "lessThan": "674a3244f07f323f21a106a7bdcaebb6db6a5058",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "b4f69df0f65e97fec439130a0d0a8b9c7cc02df2",
              "lessThan": "bbec4adc2f340d85f4a77a9ddcddaa6b1f4639c5",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "b4f69df0f65e97fec439130a0d0a8b9c7cc02df2",
              "lessThan": "11722439fb206c88e6f31be54173efa9880b4ccb",
              "versionType": "git",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "programFiles": [
            "arch/x86/kvm/vmx/nested.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "6.8",
              "status": "affected"
            },
            {
              "version": "0",
              "lessThan": "6.8",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.12.110",
              "lessThanOrEqual": "6.12.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.18.51",
              "lessThanOrEqual": "6.18.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "7.2.5",
              "lessThanOrEqual": "7.2.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "7.3",
              "lessThanOrEqual": "*",
              "versionType": "original_commit_for_fix",
              "status": "unaffected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {},
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/11722439fb206c88e6f31be54173efa9880b4ccb",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/674a3244f07f323f21a106a7bdcaebb6db6a5058",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/ae190f2439ca30067927077bf570d4c5edf07a0f",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/bbec4adc2f340d85f4a77a9ddcddaa6b1f4639c5",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ]
}