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vfio/pci: Release the VGA arbiter client on register_device() failure

Type: advisorySource: Official CVE List1 source record

In the Linux kernel, the following vulnerability has been resolved: vfio/pci: Release the VGA arbiter client on register_device() failure The re-order in the Fixes commit below displaced vfio_pci_vga_init() as the last failure point of what is now vfio_pci_core_register_device() without introducing an unwind for the VGA arbiter registration. In current kernels this is mostly benign because vfio_pci_set_decode() only uses pci_dev state, but the original failure path could leave a callback with a freed vdev cookie. The stale registration also becomes unsafe again once the callback follows drvdata to the vfio device. Add the required VGA unwind callout.

Announced Source revision 1
Original source ↗

CVE-2026-64475

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-64475

Linux

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Linux

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "87856f9af04eaacf9848710625a4ffee1d020fa9",
        "lessThan": "0f2a35a0c7ea7da347b814750eaa78adf3582381",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "4aeec3984ddc853f7c65903bde472ffdef738bae",
        "lessThan": "8d65decde9afd2bd78bcfffdc0df73b82a0b5509",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "4aeec3984ddc853f7c65903bde472ffdef738bae",
        "lessThan": "ef4c38d30b3744e89eb5048218904bb629ea8d47",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "4aeec3984ddc853f7c65903bde472ffdef738bae",
        "lessThan": "9e0a3f642e607848669235f5069f35640abbfc88",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "4aeec3984ddc853f7c65903bde472ffdef738bae",
        "lessThan": "42d758a09d2c46c42357ecde9a5492f015bde2e5",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "4aeec3984ddc853f7c65903bde472ffdef738bae",
        "lessThan": "52adb2dff7ce3d8430e2bdc5988b618a430def85",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "4aeec3984ddc853f7c65903bde472ffdef738bae",
        "lessThan": "278a5659c391fe5afe5f9ce1bad1fd24e90144f1",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "4aeec3984ddc853f7c65903bde472ffdef738bae",
        "lessThan": "daedde7f024ecf88bc8e832ed40cf2c795f0796a",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "d62dccb417cf972c978bf3c68a7d5e846bcf953e",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "6694b8daffac5a8661071f085608afc78f7acd08",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "5.10.37",
        "lessThan": "5.10.261",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "5.11.21",
        "lessThan": "5.12",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "5.12.4",
        "lessThan": "5.13",
        "versionType": "semver"
      }
    ],
    "programFiles": [
      "drivers/vfio/pci/vfio_pci_core.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "5.13"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "5.13",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "5.10.261",
        "versionType": "semver",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.212",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.178",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.145",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.96",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.39",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "7.1.4",
        "versionType": "semver",
        "lessThanOrEqual": "7.1.*"
      },
      {
        "status": "unaffected",
        "version": "7.2",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "drivers/vfio/pci/vfio_pci_core.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-64475

Source reference: /cveMetadata/cveId

Publisher severity

high

Source reference: /containers/cna/metrics

Event
#41057 · Revision 1
Added to Heist Feed
Publisher date
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