Vulnerability-Lookup

GHSA-RJ34-CRXV-J5MG

Vulnerability from github – Published: 2026-06-26 21:32 – Updated: 2026-06-30 03:37

Details

In the Linux kernel, the following vulnerability has been resolved:

vfio/pci: Clean up DMABUFs before disabling function

On device shutdown, make vfio_pci_core_close_device() call vfio_pci_dma_buf_cleanup() before the function is disabled via vfio_pci_core_disable(). This ensures that all access via DMABUFs is revoked before the function's BARs become inaccessible.

This fixes an issue where, if the function is disabled first, a tiny window exists in which the function's MSE is cleared and yet BARs could still be accessed via the DMABUF. The resources would also be freed and up for grabs by a different driver.

Severity

8.8 (High)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2026-53322"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-415",
      "CWE-826"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-06-26T20:17:25Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nvfio/pci: Clean up DMABUFs before disabling function\n\nOn device shutdown, make vfio_pci_core_close_device() call\nvfio_pci_dma_buf_cleanup() before the function is disabled via\nvfio_pci_core_disable().  This ensures that all access via DMABUFs is\nrevoked before the function\u0027s BARs become inaccessible.\n\nThis fixes an issue where, if the function is disabled first, a tiny\nwindow exists in which the function\u0027s MSE is cleared and yet BARs\ncould still be accessed via the DMABUF.  The resources would also be\nfreed and up for grabs by a different driver.",
  "id": "GHSA-rj34-crxv-j5mg",
  "modified": "2026-06-30T03:37:14Z",
  "published": "2026-06-26T21:32:17Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-53322"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/security/cve/CVE-2026-53322"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2493709"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4f1000a30f67cf7d328059242776a858611d5ef9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d97708701434ce72968e771976aaf9d3438fcafd"
    },
    {
      "type": "WEB",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53322.json"
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      "type": "CVSS_V3"
    }
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}

CVE-2026-53322 (GCVE-0-2026-53322)

Vulnerability from cvelistv5 – Published: 2026-06-26 19:41 – Updated: 2026-06-30 12:09

Title

vfio/pci: Clean up DMABUFs before disabling function

Summary

In the Linux kernel, the following vulnerability has been resolved: vfio/pci: Clean up DMABUFs before disabling function On device shutdown, make vfio_pci_core_close_device() call vfio_pci_dma_buf_cleanup() before the function is disabled via vfio_pci_core_disable(). This ensures that all access via DMABUFs is revoked before the function's BARs become inaccessible. This fixes an issue where, if the function is disabled first, a tiny window exists in which the function's MSE is cleared and yet BARs could still be accessed via the DMABUF. The resources would also be freed and up for grabs by a different driver.

Severity

8.8 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

7 (High)


                        
                          CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE

CWE-826 - Premature Release of Resource During Expected Lifetime

Assigner

Linux

References

5 references

URL	Tags
https://git.kernel.org/stable/c/4f1000a30f67cf7d3…
https://git.kernel.org/stable/c/d97708701434ce729…
https://access.redhat.com/security/cve/CVE-2026-53322	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2493709	issue-trackingx_refsource_REDHAT
https://security.access.redhat.com/data/csaf/v2/v…	x_sadp-csaf-vex

Impacted products

7 products

Vendor	Product	Version
Linux	Linux	Affected: 5d74781ebc86c5fa9e9d6934024c505412de9b52 , < 4f1000a30f67cf7d328059242776a858611d5ef9 (git) Affected: 5d74781ebc86c5fa9e9d6934024c505412de9b52 , < d97708701434ce72968e771976aaf9d3438fcafd (git)
Linux	Linux	Affected: 6.19 Unaffected: 0 , < 6.19 (semver) Unaffected: 7.0.10 , ≤ 7.0.* (semver) Unaffected: 7.1 , ≤ * (original_commit_for_fix)
Red Hat	Red Hat Enterprise Linux 10	cpe:/o:redhat:enterprise_linux:10
Red Hat	Red Hat Enterprise Linux 6	cpe:/o:redhat:enterprise_linux:6
Red Hat	Red Hat Enterprise Linux 7	cpe:/o:redhat:enterprise_linux:7
Red Hat	Red Hat Enterprise Linux 8	cpe:/o:redhat:enterprise_linux:8
Red Hat	Red Hat Enterprise Linux 9	cpe:/o:redhat:enterprise_linux:9

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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.

Action not permitted

GHSA-RJ34-CRXV-J5MG

CVE-2026-53322 (GCVE-0-2026-53322)

Tags

Sightings

Nomenclature