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CVE-2026-45945 iommu/vt-d: Fix race condition during PASID entry replacement

🗓️ 27 May 2026 12:18:01Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 50 Views

Fix race in PASID entry replacement in Intel VT-d IOMMU by clear-then-update flow.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-45945
27 May 202612:18
attackerkb
AstraLinux
Astra Linux – Vulnerability in Linux 5.10
19 Jun 202611:10
astralinux
Chainguard
CVE-2026-45945 vulnerabilities
16 Jul 202602:17
cgr
CNNVD
Linux kernel 安全漏洞
27 May 202600:00
cnnvd
CVE
CVE-2026-45945
27 May 202612:18
cve
Debian CVE
CVE-2026-45945
27 May 202612:18
debiancve
EUVD
EUVD-2026-32229
27 May 202615:33
euvd
NVD
CVE-2026-45945
27 May 202614:17
nvd
OSV
BELL-CVE-2026-45945
28 May 202606:10
osv
OSV
CGA-GX39-2QCF-CX27
15 Jul 202622:15
osv
Rows per page
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/iommu/intel/iommu.c",
      "drivers/iommu/intel/nested.c",
      "drivers/iommu/intel/pasid.c",
      "drivers/iommu/intel/pasid.h"
    ],
    "versions": [
      {
        "version": "7543ee63e8113aa34b07df3b16b3b9d2c5f73939",
        "lessThan": "4718007870547e1efebbdd6745d9fce58f008fef",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "7543ee63e8113aa34b07df3b16b3b9d2c5f73939",
        "lessThan": "66a7aff480a82b8642b3991fed5fdc9780022157",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "7543ee63e8113aa34b07df3b16b3b9d2c5f73939",
        "lessThan": "c3b1edea3791fa91ab7032faa90355913ad9451b",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/iommu/intel/iommu.c",
      "drivers/iommu/intel/nested.c",
      "drivers/iommu/intel/pasid.c",
      "drivers/iommu/intel/pasid.h"
    ],
    "versions": [
      {
        "version": "6.13",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "6.13",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.39",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.19.4",
        "lessThanOrEqual": "6.19.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.0",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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18 Jul 2026 15:00Current
CVSS 3.18.8
EPSS0.00134
50