UnratedFix available

KVM: nVMX: Ensure KVM_REQ_GET_NESTED_STATE_PAGES is cleared on VM-Exit

Type: advisorySources: OSV

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.

Products: Kernel
Affected versions: Not specified
Fixed versions: 6.12.110, 6.18.51, 7.2.5
CVEs: CVE-2026-89931
Confirmed fixed CVEs: Not specified
Updated in this feed: 2 Nov 2026, 21:19 UTC · Revision 1

Source evidence

KVM: nVMX: Ensure KVM_REQ_GET_NESTED_STATE_PAGES is cleared on VM-Exit

core-osv · Original source

Published 16 Sept 2026, 10:32 UTC

osv:CVE-2026-89931

Kernel

Fixed versions: 6.12.110, 6.18.51, 7.2.5

Complete source record

{
  "id": "afc54127d53bbcfdc32299429a3559d42a1693429dee50827b0ebb63d35d2730",
  "url": "https://osv.dev/vulnerability/CVE-2026-89931",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "KVM: nVMX: Ensure KVM_REQ_GET_NESTED_STATE_PAGES is cleared on VM-Exit",
    "summary": "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.",
    "evidence": "osv:CVE-2026-89931",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.12.110",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.18.51",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "7.2.5",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2026-89931",
      "aliases": [
        "CVE-2026-89931"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "b4f69df0f65e97fec439130a0d0a8b9c7cc02df2"
                },
                {
                  "fixed": "ae190f2439ca30067927077bf570d4c5edf07a0f"
                },
                {
                  "fixed": "674a3244f07f323f21a106a7bdcaebb6db6a5058"
                },
                {
                  "fixed": "bbec4adc2f340d85f4a77a9ddcddaa6b1f4639c5"
                },
                {
                  "fixed": "11722439fb206c88e6f31be54173efa9880b4ccb"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-89931.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.8.0"
                },
                {
                  "fixed": "6.12.110"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.13.0"
                },
                {
                  "fixed": "6.18.51"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.19.0"
                },
                {
                  "fixed": "7.2.5"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-89931.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:23.586528404Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/11722439fb206c88e6f31be54173efa9880b4ccb",
        "https://git.kernel.org/stable/c/674a3244f07f323f21a106a7bdcaebb6db6a5058",
        "https://git.kernel.org/stable/c/ae190f2439ca30067927077bf570d4c5edf07a0f",
        "https://git.kernel.org/stable/c/bbec4adc2f340d85f4a77a9ddcddaa6b1f4639c5",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89931.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-89931",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89931.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-89931",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 490204,
  "published_at": "2026-09-16T10:32:22.202+00:00"
}