CVE-2026-89911

Full vulnerability record from the local CVENow database.

Description

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Correctly cap TLBI Range to the architural limit TLB Invalidation by Range has a fairly powerful way of encoding pretty large ranges in a small number of bits. This range can be based on an arbitrary VA, which means it is pretty easy for a guest to generate an overflow should the hypervisor be naive enough to add the range to the base... Make sure the range is capped to the limit dictated by the address bit that determines the VA range. For an IPA invalidation, this is further corrected down the line to ignore the upper range.

Severity

HIGH

CVSS score

7.9 (v3.1)

Vulnerability status

Received

Source identifier

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

Published

2026-09-16 11:17:00.127000

Last modified

2026-10-19 09:18:36.533000

View original CVE JSON

{
  "id": "CVE-2026-89911",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2026-09-16T11:17:00.127",
  "lastModified": "2026-10-19T09:18:36.533",
  "vulnStatus": "Received",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: arm64: Correctly cap TLBI Range to the architural limit\n\nTLB Invalidation by Range has a fairly powerful way of encoding pretty\nlarge ranges in a small number of bits. This range can be based on an\narbitrary VA, which means it is pretty easy for a guest to generate an\noverflow should the hypervisor be naive enough to add the range to the\nbase...\n\nMake sure the range is capped to the limit dictated by the address bit\nthat determines the VA range. For an IPA invalidation, this is further\ncorrected down the line to ignore the upper range."
    }
  ],
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "programFiles": [
            "arch/arm64/include/asm/kvm_nested.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "4ffa72ad8f37e73bbb6c0baa88557bcb4fd39929",
              "lessThan": "566b1f08d983615f731cc693f2ad59db302c6b57",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "4ffa72ad8f37e73bbb6c0baa88557bcb4fd39929",
              "lessThan": "2de38f0448b45d27eba984fc0d9edb7a138972c2",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "4ffa72ad8f37e73bbb6c0baa88557bcb4fd39929",
              "lessThan": "69a598288195947a1662b53de702eb6976af96b7",
              "versionType": "git",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "programFiles": [
            "arch/arm64/include/asm/kvm_nested.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "6.16",
              "status": "affected"
            },
            {
              "version": "0",
              "lessThan": "6.16",
              "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": {
    "cvssMetricV31": [
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:H",
          "baseScore": 7.9,
          "baseSeverity": "HIGH",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "CHANGED",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 2.0,
        "impactScore": 5.3
      }
    ]
  },
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/2de38f0448b45d27eba984fc0d9edb7a138972c2",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/566b1f08d983615f731cc693f2ad59db302c6b57",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/69a598288195947a1662b53de702eb6976af96b7",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ]
}