Vulnerability-Lookup

CVE-2026-64475 (GCVE-0-2026-64475)

Vulnerability from cvelistv5 – Published: 2026-07-25 08:51 – Updated: 2026-07-25 08:51

Title

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

Summary

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.

Severity

No CVSS data available.

Assigner

Linux

References

8 references

URL	Tags
https://git.kernel.org/stable/c/0f2a35a0c7ea7da34…
https://git.kernel.org/stable/c/8d65decde9afd2bd7…
https://git.kernel.org/stable/c/ef4c38d30b3744e89…
https://git.kernel.org/stable/c/9e0a3f642e6078486…
https://git.kernel.org/stable/c/42d758a09d2c46c42…
https://git.kernel.org/stable/c/52adb2dff7ce3d843…
https://git.kernel.org/stable/c/278a5659c391fe5af…
https://git.kernel.org/stable/c/daedde7f024ecf88b…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 87856f9af04eaacf9848710625a4ffee1d020fa9 , < 0f2a35a0c7ea7da347b814750eaa78adf3582381 (git) Affected: 4aeec3984ddc853f7c65903bde472ffdef738bae , < 8d65decde9afd2bd78bcfffdc0df73b82a0b5509 (git) Affected: 4aeec3984ddc853f7c65903bde472ffdef738bae , < ef4c38d30b3744e89eb5048218904bb629ea8d47 (git) Affected: 4aeec3984ddc853f7c65903bde472ffdef738bae , < 9e0a3f642e607848669235f5069f35640abbfc88 (git) Affected: 4aeec3984ddc853f7c65903bde472ffdef738bae , < 42d758a09d2c46c42357ecde9a5492f015bde2e5 (git) Affected: 4aeec3984ddc853f7c65903bde472ffdef738bae , < 52adb2dff7ce3d8430e2bdc5988b618a430def85 (git) Affected: 4aeec3984ddc853f7c65903bde472ffdef738bae , < 278a5659c391fe5afe5f9ce1bad1fd24e90144f1 (git) Affected: 4aeec3984ddc853f7c65903bde472ffdef738bae , < daedde7f024ecf88bc8e832ed40cf2c795f0796a (git) Affected: d62dccb417cf972c978bf3c68a7d5e846bcf953e (git) Affected: 6694b8daffac5a8661071f085608afc78f7acd08 (git) Affected: 5.10.37 , < 5.10.261 (semver) Affected: 5.11.21 , < 5.12 (semver) Affected: 5.12.4 , < 5.13 (semver)
Linux	Linux	Affected: 5.13 Unaffected: 0 , < 5.13 (semver) Unaffected: 5.10.261 , ≤ 5.10.* (semver) Unaffected: 5.15.212 , ≤ 5.15.* (semver) Unaffected: 6.1.178 , ≤ 6.1.* (semver) Unaffected: 6.6.145 , ≤ 6.6.* (semver) Unaffected: 6.12.96 , ≤ 6.12.* (semver) Unaffected: 6.18.39 , ≤ 6.18.* (semver) Unaffected: 7.1.4 , ≤ 7.1.* (semver) Unaffected: 7.2-rc2 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

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The stale registration also becomes\\nunsafe again once the callback follows drvdata to the vfio device.\\n\\nAdd the required VGA unwind callout.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/vfio/pci/vfio_pci_core.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"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\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/vfio/pci/vfio_pci_core.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"5.13\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"5.13\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.261\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.212\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.178\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.145\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.96\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.39\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.1.4\",\"lessThanOrEqual\":\"7.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.2-rc2\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/0f2a35a0c7ea7da347b814750eaa78adf3582381\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/278a5659c391fe5afe5f9ce1bad1fd24e90144f1\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/42d758a09d2c46c42357ecde9a5492f015bde2e5\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/52adb2dff7ce3d8430e2bdc5988b618a430def85\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/8d65decde9afd2bd78bcfffdc0df73b82a0b5509\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/9e0a3f642e607848669235f5069f35640abbfc88\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/daedde7f024ecf88bc8e832ed40cf2c795f0796a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/ef4c38d30b3744e89eb5048218904bb629ea8d47\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}",
    "suse_vex": {
      "aggregate_severity": "not set",
      "current_release_date": "2026-07-25T15:58:38Z",
      "cve": "CVE-2026-64475",
      "id": "CVE-2026-64475",
      "initial_release_date": "2026-07-25T15:58:38Z",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-64475",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-64475.json",
      "version": "2"
    }
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}

GHSA-MJ56-4C42-9869

Vulnerability from github – Published: 2026-07-25 12:31 – Updated: 2026-07-25 12:31

Details

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.

Show details on source website

JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2026-64475"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-25T10:17:32Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nvfio/pci: Release the VGA arbiter client on register_device() failure\n\nThe re-order in the Fixes commit below displaced vfio_pci_vga_init() as\nthe last failure point of what is now vfio_pci_core_register_device()\nwithout introducing an unwind for the VGA arbiter registration.\n\nIn current kernels this is mostly benign because vfio_pci_set_decode()\nonly uses pci_dev state, but the original failure path could leave a\ncallback with a freed vdev cookie.  The stale registration also becomes\nunsafe again once the callback follows drvdata to the vfio device.\n\nAdd the required VGA unwind callout.",
  "id": "GHSA-mj56-4c42-9869",
  "modified": "2026-07-25T12:31:37Z",
  "published": "2026-07-25T12:31:37Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-64475"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0f2a35a0c7ea7da347b814750eaa78adf3582381"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/278a5659c391fe5afe5f9ce1bad1fd24e90144f1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/42d758a09d2c46c42357ecde9a5492f015bde2e5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/52adb2dff7ce3d8430e2bdc5988b618a430def85"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8d65decde9afd2bd78bcfffdc0df73b82a0b5509"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9e0a3f642e607848669235f5069f35640abbfc88"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/daedde7f024ecf88bc8e832ed40cf2c795f0796a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ef4c38d30b3744e89eb5048218904bb629ea8d47"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.

Action not permitted

CVE-2026-64475 (GCVE-0-2026-64475)

GHSA-MJ56-4C42-9869

Tags

Sightings

Nomenclature