CVE-2026-64562

🗓️ 04 Aug 2026 06:23:21Reported by LinuxType

KVM nested virtualization: shadow virtual machine control structure freed before VMCLEAR completes; fix keeps it attached until VMCLEAR ends, then hides and frees

Reporter	Title	Published	Views	Family All 21
ATTACKERKB	CVE-2026-64562	4 Aug 202606:23	–	attackerkb
CBLMariner	CVE-2026-64562 affecting package kernel for versions less than 6.6.150.1-1	12 Aug 202623:21	–	cbl_mariner
Circl	CVE-2026-64562	12 Aug 202620:45	–	circl
Cvelist	CVE-2026-64562 KVM: nVMX: Hide shadow VMCS right after VMCLEAR	4 Aug 202606:23	–	cvelist
Debian	[SECURITY] [DLA 4745-1] linux-6.12 security update	18 Aug 202610:51	–	debian
Debian	[SECURITY] [DSA 6415-1] linux security update	6 Aug 202617:59	–	debian
Debian CVE	CVE-2026-64562	4 Aug 202606:23	–	debiancve
Tenable Nessus	Debian dla-4745 : ata-modules-6.12.100+deb12-armmp-di - security update	18 Aug 202600:00	–	nessus
Tenable Nessus	Debian dsa-6415 : ata-modules-6.12.100+deb13-armmp-di - security update	6 Aug 202600:00	–	nessus
Tenable Nessus	Photon OS 5.0: Linux PHSA-2026-5.0-92-0952	12 Aug 202600:00	–	nessus

Vulners

CNA

Node

linux linux_kernelRange4.9–5.10.265

linux linux_kernelRange5.11.0–5.15.216

linux linux_kernelRange5.16.0–6.1.183

linux linux_kernelRange6.2.0–6.6.148

linux linux_kernelRange6.7.0–6.12.101

linux linux_kernelRange6.13.0–6.18.42

linux linux_kernelRange6.19.0–7.1.6

linux linux_kernelRange7.2.0≥

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "arch/x86/kvm/vmx/nested.c"
    ],
    "versions": [
      {
        "version": "355f4fb1405ec29d0fac49b4d41fcd78cbd455d5",
        "lessThan": "b82c3144d8264265448292ca406f60bafeba3b6f",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "355f4fb1405ec29d0fac49b4d41fcd78cbd455d5",
        "lessThan": "4f50e6aec16f69627dbad5704d1e90a255d766a7",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "355f4fb1405ec29d0fac49b4d41fcd78cbd455d5",
        "lessThan": "dc3eecfa219ebc9d01eaf7d1abd1441efe884dab",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "355f4fb1405ec29d0fac49b4d41fcd78cbd455d5",
        "lessThan": "af56298e9d86e6098cd1d2e155cb2949b7c45412",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "355f4fb1405ec29d0fac49b4d41fcd78cbd455d5",
        "lessThan": "589419470030a89f16cf19300658b6dc644ca946",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "355f4fb1405ec29d0fac49b4d41fcd78cbd455d5",
        "lessThan": "8001d2ce9d9bd09118ce523aef595aa094573ae3",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "355f4fb1405ec29d0fac49b4d41fcd78cbd455d5",
        "lessThan": "1dabef6e206568bf9d9ade74f6e56a48ea35695d",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "355f4fb1405ec29d0fac49b4d41fcd78cbd455d5",
        "lessThan": "622ebfac01ba4f9c0060cebd41257fe46fc4a0b3",
        "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/x86/kvm/vmx/nested.c"
    ],
    "versions": [
      {
        "version": "4.9",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "4.9",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.10.265",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.15.216",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.1.183",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.148",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.101",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.42",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.1.6",
        "lessThanOrEqual": "7.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.2",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

Source	Link
git	www.git.kernel.org/stable/c/4f50e6aec16f69627dbad5704d1e90a255d766a7
git	www.git.kernel.org/stable/c/b82c3144d8264265448292ca406f60bafeba3b6f
git	www.git.kernel.org/stable/c/8001d2ce9d9bd09118ce523aef595aa094573ae3
git	www.git.kernel.org/stable/c/1dabef6e206568bf9d9ade74f6e56a48ea35695d
git	www.git.kernel.org/stable/c/af56298e9d86e6098cd1d2e155cb2949b7c45412
git	www.git.kernel.org/stable/c/dc3eecfa219ebc9d01eaf7d1abd1441efe884dab
git	www.git.kernel.org/stable/c/622ebfac01ba4f9c0060cebd41257fe46fc4a0b3
git	www.git.kernel.org/stable/c/589419470030a89f16cf19300658b6dc644ca946

19 Aug 2026 17:20Current

5.5Medium risk

Vulners AI Score5.5

CVSS 3.18.8

EPSS0.00121