CVE-2026-63807

🗓️ 19 Jul 2026 12:02:10Reported by LinuxType

KVM x86/mmu fixes pre-check to ensure hugepages are in memslot before max mapping level.

Reporter	Title	Published	Views	Family All 8
ATTACKERKB	CVE-2026-63807	19 Jul 202612:02	–	attackerkb
Cvelist	CVE-2026-63807 KVM: x86/mmu: Ensure hugepage is in by slot before checking max mapping level	19 Jul 202612:02	–	cvelist
EUVD	EUVD-2026-45473	19 Jul 202612:02	–	euvd
NVD	CVE-2026-63807	19 Jul 202612:16	–	nvd
OSV	CVE-2026-63807 KVM: x86/mmu: Ensure hugepage is in by slot before checking max mapping level	19 Jul 202612:02	–	osv
OSV	DEBIAN-CVE-2026-63807	19 Jul 202612:16	–	osv
Positive Technologies	PT-2026-61123	19 Jul 202600:00	–	ptsecurity
SUSE CVE	SUSE CVE-2026-63807	19 Jul 202617:34	–	susecve

Vulners

CNA

Node

linux linux_kernelRange5.12–5.15.211

linux linux_kernelRange5.16.0–6.1.177

linux linux_kernelRange6.2.0–6.6.144

linux linux_kernelRange6.7.0–6.12.95

linux linux_kernelRange6.13.0–6.18.38

linux linux_kernelRange6.19.0–7.1.3

linux linux_kernelRange7.2.0–7.2-rc1

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "arch/x86/kvm/mmu/mmu.c",
      "include/linux/kvm_host.h"
    ],
    "versions": [
      {
        "version": "9eba50f8d7fcb61774f160890f98239fa3ab68a6",
        "lessThan": "7b52008023b7facf40fba3ebe92449bda8ea53b9",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "9eba50f8d7fcb61774f160890f98239fa3ab68a6",
        "lessThan": "5cab1c989f938f5e1b9a0de66486f1fc2c28479b",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "9eba50f8d7fcb61774f160890f98239fa3ab68a6",
        "lessThan": "48b91ed7e22bb82571c34f8b80b6ecdc90a6fab8",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "9eba50f8d7fcb61774f160890f98239fa3ab68a6",
        "lessThan": "c5c29b3c268332afe67d598a034c58344540ed92",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "9eba50f8d7fcb61774f160890f98239fa3ab68a6",
        "lessThan": "18587f9831612e24cd8f24be1ec15478feff7abc",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "9eba50f8d7fcb61774f160890f98239fa3ab68a6",
        "lessThan": "b2ae3245ea44dccaa9af676b6747476951883318",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "9eba50f8d7fcb61774f160890f98239fa3ab68a6",
        "lessThan": "ef057cbf825e03b63f6edf5980f96abf3c53089d",
        "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/mmu/mmu.c",
      "include/linux/kvm_host.h"
    ],
    "versions": [
      {
        "version": "5.12",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "5.12",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.15.211",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.1.177",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.144",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.95",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.38",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.1.3",
        "lessThanOrEqual": "7.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.2-rc1",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

Source	Link
git	www.git.kernel.org/stable/c/18587f9831612e24cd8f24be1ec15478feff7abc
git	www.git.kernel.org/stable/c/b2ae3245ea44dccaa9af676b6747476951883318
git	www.git.kernel.org/stable/c/7b52008023b7facf40fba3ebe92449bda8ea53b9
git	www.git.kernel.org/stable/c/48b91ed7e22bb82571c34f8b80b6ecdc90a6fab8
git	www.git.kernel.org/stable/c/ef057cbf825e03b63f6edf5980f96abf3c53089d
git	www.git.kernel.org/stable/c/5cab1c989f938f5e1b9a0de66486f1fc2c28479b
git	www.git.kernel.org/stable/c/c5c29b3c268332afe67d598a034c58344540ed92

19 Jul 2026 12:16Current

5.5Medium risk

Vulners AI Score5.5