CVE-2021-47639 KVM: x86/mmu: Zap _all_ roots when unmapping gfn range in TDP MMU

🗓️ 26 Feb 2025 01:54:11Reported by LinuxType

Linux kernel vulnerability fixed to zap all roots when unmapping gfn range in TDP MMU.

Reporter	Title	Published	Views	Family All 79
AstraLinux	Astra Linux - уязвимость в linux-5.10	20 May 202605:53	–	astralinux
BDU FSTEC	The vulnerability of the kvm_tdp_mmu_put_root() function in the arch/x86/kvm/mmu/tdp_mmu.c module of the virtualization subsystem on the x86 kernel of the Linux operating system allows a attacker to compromise the confidentiality, integrity, and accessibility of the protected information.	14 Apr 202500:00	–	bdu_fstec
CNNVD	Linux kernel 安全漏洞	26 Feb 202500:00	–	cnnvd
CVE	CVE-2021-47639	26 Feb 202501:54	–	cve
Debian CVE	CVE-2021-47639	26 Feb 202501:54	–	debiancve
EUVD	EUVD-2021-34665	3 Oct 202520:07	–	euvd
NVD	CVE-2021-47639	26 Feb 202506:37	–	nvd
OpenVAS	SUSE: Security Advisory (SUSE-SU-2025:1027-1)	28 Mar 202500:00	–	openvas
OpenVAS	SUSE: Security Advisory (SUSE-SU-2025:1241-1)	16 Apr 202500:00	–	openvas
OSV	DEBIAN-CVE-2021-47639	26 Feb 202506:37	–	osv

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "arch/x86/kvm/mmu/tdp_mmu.c"
    ],
    "versions": [
      {
        "version": "b7cccd397f310739fb85383033e95580f99927e0",
        "lessThan": "af47248407c0c5ae52a752af1ab5ce5b0db91502",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "b7cccd397f310739fb85383033e95580f99927e0",
        "lessThan": "0c8a8da182d4333d9bbb9131d765145568c847b2",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "b7cccd397f310739fb85383033e95580f99927e0",
        "lessThan": "8cf6f98ab1d16d5e607635a0c21c4231eb15367e",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "b7cccd397f310739fb85383033e95580f99927e0",
        "lessThan": "d62007edf01f5c11f75d0f4b1e538fc52a5b1982",
        "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/tdp_mmu.c"
    ],
    "versions": [
      {
        "version": "5.13",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "5.13",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.15.33",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.16.19",
        "lessThanOrEqual": "5.16.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.17.2",
        "lessThanOrEqual": "5.17.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.18",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

Source	Link
git	www.git.kernel.org/stable/c/d62007edf01f5c11f75d0f4b1e538fc52a5b1982
git	www.git.kernel.org/stable/c/0c8a8da182d4333d9bbb9131d765145568c847b2
git	www.git.kernel.org/stable/c/8cf6f98ab1d16d5e607635a0c21c4231eb15367e
git	www.git.kernel.org/stable/c/af47248407c0c5ae52a752af1ab5ce5b0db91502

11 May 2026 13:58Current

EPSS0.00231