Vulnerability-Lookup

GHSA-HJFW-G9QR-C456

Vulnerability from github – Published: 2026-06-26 21:32 – Updated: 2026-07-08 06:31

Details

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

iommu: Fix NULL group->domain dereference in pci_dev_reset_iommu_done()

Local sashiko review pointed it out that group->domain could be NULL when a default domain fails to allocate during the first probe, which can crash at domain->ops->attach_dev dereference in __iommu_attach_device() invoked by pci_dev_reset_iommu_done().

pci_dev_reset_iommu_prepare() is fine as an old_domain pointer can be NULL.

Skip the re-attach in pci_dev_reset_iommu_done() to fix the bug.

Severity

5.5 (Medium)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2026-53280"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-06-26T20:17:19Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\niommu: Fix NULL group-\u003edomain dereference in pci_dev_reset_iommu_done()\n\nLocal sashiko review pointed it out that group-\u003edomain could be NULL when\na default domain fails to allocate during the first probe, which can crash\nat domain-\u003eops-\u003eattach_dev dereference in __iommu_attach_device() invoked\nby pci_dev_reset_iommu_done().\n\npci_dev_reset_iommu_prepare() is fine as an old_domain pointer can be NULL.\n\nSkip the re-attach in pci_dev_reset_iommu_done() to fix the bug.",
  "id": "GHSA-hjfw-g9qr-c456",
  "modified": "2026-07-08T06:31:34Z",
  "published": "2026-06-26T21:32:16Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-53280"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/17194cd0dd236e732d116d50840d795ca50ef196"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d769711fcddd005f1e654b3bde547140917fe696"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-53280 (GCVE-0-2026-53280)

Vulnerability from cvelistv5 – Published: 2026-06-26 19:40 – Updated: 2026-06-26 19:40

Title

iommu: Fix NULL group->domain dereference in pci_dev_reset_iommu_done()

Summary

In the Linux kernel, the following vulnerability has been resolved: iommu: Fix NULL group->domain dereference in pci_dev_reset_iommu_done() Local sashiko review pointed it out that group->domain could be NULL when a default domain fails to allocate during the first probe, which can crash at domain->ops->attach_dev dereference in __iommu_attach_device() invoked by pci_dev_reset_iommu_done(). pci_dev_reset_iommu_prepare() is fine as an old_domain pointer can be NULL. Skip the re-attach in pci_dev_reset_iommu_done() to fix the bug.

Severity

No CVSS data available.

Assigner

Linux

References

2 references

URL	Tags
https://git.kernel.org/stable/c/17194cd0dd236e732…
https://git.kernel.org/stable/c/d769711fcddd005f1…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: c279e83953d937470f8a6e69b69f62608714f13f , < 17194cd0dd236e732d116d50840d795ca50ef196 (git) Affected: c279e83953d937470f8a6e69b69f62608714f13f , < d769711fcddd005f1e654b3bde547140917fe696 (git)
Linux	Linux	Affected: 7.0 Unaffected: 0 , < 7.0 (semver) Unaffected: 7.0.10 , ≤ 7.0.* (semver) Unaffected: 7.1 , ≤ * (original_commit_for_fix)

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JSON

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/iommu/iommu.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
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              "status": "affected",
              "version": "c279e83953d937470f8a6e69b69f62608714f13f",
              "versionType": "git"
            },
            {
              "lessThan": "d769711fcddd005f1e654b3bde547140917fe696",
              "status": "affected",
              "version": "c279e83953d937470f8a6e69b69f62608714f13f",
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          ]
        },
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          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "7.0"
            },
            {
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
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          "nodes": [
            {
              "cpeMatch": [
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                },
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                  "versionEndExcluding": "7.1",
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                }
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\niommu: Fix NULL group-\u003edomain dereference in pci_dev_reset_iommu_done()\n\nLocal sashiko review pointed it out that group-\u003edomain could be NULL when\na default domain fails to allocate during the first probe, which can crash\nat domain-\u003eops-\u003eattach_dev dereference in __iommu_attach_device() invoked\nby pci_dev_reset_iommu_done().\n\npci_dev_reset_iommu_prepare() is fine as an old_domain pointer can be NULL.\n\nSkip the re-attach in pci_dev_reset_iommu_done() to fix the bug."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-26T19:40:42.226Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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      "references": [
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          "url": "https://git.kernel.org/stable/c/17194cd0dd236e732d116d50840d795ca50ef196"
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        {
          "url": "https://git.kernel.org/stable/c/d769711fcddd005f1e654b3bde547140917fe696"
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      ],
      "title": "iommu: Fix NULL group-\u003edomain dereference in pci_dev_reset_iommu_done()",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-53280",
    "datePublished": "2026-06-26T19:40:42.226Z",
    "dateReserved": "2026-06-09T07:44:35.395Z",
    "dateUpdated": "2026-06-26T19:40:42.226Z",
    "state": "PUBLISHED"
  },
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  "dataVersion": "5.2"
}

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-HJFW-G9QR-C456

CVE-2026-53280 (GCVE-0-2026-53280)

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Sightings

Nomenclature