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CVE-2026-89775 KVM: arm64: Handle negative S1 walk levels in VNCR TLB size evaluation

🗓️ 16 Sep 2026 08:39:16Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 12 Views

KVM arm64 mishandles negative S1 walk levels in VNCR TLB size evaluation, causing zero-size invalidation.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
circl
Circl
CVE-2026-89775
16 Sep 202615:20
circl
cve
CVE
CVE-2026-89775
16 Sep 202608:39
cve
debiancve
Debian CVE
CVE-2026-89775
16 Sep 202608:39
debiancve
euvd
EUVD
EUVD-2026-80296
16 Sep 202608:39
euvd
nvd
NVD
CVE-2026-89775
16 Sep 202609:17
nvd
osv
OSV
DEBIAN-CVE-2026-89775
16 Sep 202609:17
osv
redhatcve
RedhatCVE
CVE-2026-89775
16 Sep 202620:06
redhatcve
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "arch/arm64/kvm/nested.c"
    ],
    "versions": [
      {
        "version": "7270cc9157f474dfc46750a34c9d7defc686b2eb",
        "lessThan": "be54a70067c7dbe1381157e8a238fa4b16ea9c05",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "7270cc9157f474dfc46750a34c9d7defc686b2eb",
        "lessThan": "1c9fca34b9625a67a7f1a03c8604f3df760c6c49",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "7270cc9157f474dfc46750a34c9d7defc686b2eb",
        "lessThan": "8053393680d4fa3eb962667d2be95dd39f0940e5",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "arch/arm64/kvm/nested.c"
    ],
    "versions": [
      {
        "version": "6.16",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "6.16",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.51",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.2.5",
        "lessThanOrEqual": "7.2.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.3-rc1",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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16 Sep 2026 14:38Current
CVSS 3.19.3
EPSS0.00184
12