CVE-2026-64172 KVM: SVM: Disable AVIC IPI virtualization on Hygon Family 18h (erratum #1235)

🗓️ 19 Jul 2026 15:40:57Reported by LinuxType

KVM SVM fix extends AMD 17h erratum workaround to Hygon 18h to disable AVIC IPI and prevent hung vCPUs.

Reporter	Title	Published	Views	Family All 8
ATTACKERKB	CVE-2026-64172	19 Jul 202615:40	–	attackerkb
Circl	CVE-2026-64172	19 Jul 202618:17	–	circl
CVE	CVE-2026-64172	19 Jul 202615:40	–	cve
EUVD	EUVD-2026-45857	19 Jul 202615:40	–	euvd
NVD	CVE-2026-64172	19 Jul 202616:17	–	nvd
OSV	CVE-2026-64172 KVM: SVM: Disable AVIC IPI virtualization on Hygon Family 18h (erratum #1235)	19 Jul 202615:40	–	osv
OSV	DEBIAN-CVE-2026-64172	19 Jul 202619:48	–	osv
Positive Technologies	PT-2026-61489	19 Jul 202600:00	–	ptsecurity

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "arch/x86/kvm/svm/avic.c"
    ],
    "versions": [
      {
        "version": "8de4a1c8164e5b2e40d1df764840a31de983f40b",
        "lessThan": "94ade38f317ea086a181db0e6b69c574b3b70a5e",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "8de4a1c8164e5b2e40d1df764840a31de983f40b",
        "lessThan": "9560e6fee887a9594a89fa265b5b9c79b1591803",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "8de4a1c8164e5b2e40d1df764840a31de983f40b",
        "lessThan": "9a12fa5213cfc391e0eed63902d3be98f0913765",
        "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/svm/avic.c"
    ],
    "versions": [
      {
        "version": "6.17",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "6.17",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.34",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.0.11",
        "lessThanOrEqual": "7.0.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.1",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

Source	Link
git	www.git.kernel.org/stable/c/9560e6fee887a9594a89fa265b5b9c79b1591803
git	www.git.kernel.org/stable/c/9a12fa5213cfc391e0eed63902d3be98f0913765
git	www.git.kernel.org/stable/c/94ade38f317ea086a181db0e6b69c574b3b70a5e

19 Jul 2026 15:40Current