Vulnerability-Lookup

GHSA-6XM8-36MH-MXJ7

Vulnerability from github – Published: 2026-09-24 18:31 – Updated: 2026-09-24 18:31

Details

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

PCI/sysfs: Add CAP_SYS_ADMIN check to __resource_resize_store()

Currently, the __resource_resize_store() allows writing to the resourceN_resize sysfs attribute to change a BAR's size without checking for capabilities, currently relying only on the file access check.

Resizing a BAR modifies PCI device configuration and can disrupt active drivers. After the upcoming conversion to static attributes, it will also trigger resource file updates via sysfs_update_groups().

Add a CAP_SYS_ADMIN check to prevent unprivileged users from performing BAR resize operations.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-97505"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-24T17:17:28Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nPCI/sysfs: Add CAP_SYS_ADMIN check to __resource_resize_store()\n\nCurrently, the __resource_resize_store() allows writing to the\nresourceN_resize sysfs attribute to change a BAR\u0027s size without checking\nfor capabilities, currently relying only on the file access check.\n\nResizing a BAR modifies PCI device configuration and can disrupt active\ndrivers.  After the upcoming conversion to static attributes, it will also\ntrigger resource file updates via sysfs_update_groups().\n\nAdd a CAP_SYS_ADMIN check to prevent unprivileged users from performing BAR\nresize operations.",
  "id": "GHSA-6xm8-36mh-mxj7",
  "modified": "2026-09-24T18:31:35Z",
  "published": "2026-09-24T18:31:35Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-97505"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/25ec7f57deceec633f27bc93b615f951e2ade814"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b722a607f858b9cd036075ea0efad553fb98e982"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cbf0628c0b7db86c5ce36451f088101546acbf1d"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-97505 (GCVE-0-2026-97505)

Vulnerability from cvelistv5 – Published: 2026-09-24 16:04 – Updated: 2026-09-24 16:04

Title

PCI/sysfs: Add CAP_SYS_ADMIN check to __resource_resize_store()

Summary

In the Linux kernel, the following vulnerability has been resolved: PCI/sysfs: Add CAP_SYS_ADMIN check to __resource_resize_store() Currently, the __resource_resize_store() allows writing to the resourceN_resize sysfs attribute to change a BAR's size without checking for capabilities, currently relying only on the file access check. Resizing a BAR modifies PCI device configuration and can disrupt active drivers. After the upcoming conversion to static attributes, it will also trigger resource file updates via sysfs_update_groups(). Add a CAP_SYS_ADMIN check to prevent unprivileged users from performing BAR resize operations.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

3 references

URL	Tags
https://git.kernel.org/stable/c/b722a607f858b9cd0…
https://git.kernel.org/stable/c/cbf0628c0b7db86c5…
https://git.kernel.org/stable/c/25ec7f57deceec633…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < b722a607f858b9cd036075ea0efad553fb98e982 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < cbf0628c0b7db86c5ce36451f088101546acbf1d (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 25ec7f57deceec633f27bc93b615f951e2ade814 (git) Affected: 0 , < 6.12.111 (semver) Affected: 0 , < 6.18.53 (semver)
Linux	Linux	Unaffected: 6.12.111 , ≤ 6.12.* (semver) Unaffected: 6.18.53 , ≤ 6.18.* (semver) Unaffected: 7.2 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/pci/pci-sysfs.c"
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              "versionType": "git"
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            }
          ]
        },
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          "programFiles": [
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              "versionType": "original_commit_for_fix"
            }
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      "cpeApplicability": [
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                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
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      "descriptions": [
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nPCI/sysfs: Add CAP_SYS_ADMIN check to __resource_resize_store()\n\nCurrently, the __resource_resize_store() allows writing to the\nresourceN_resize sysfs attribute to change a BAR\u0027s size without checking\nfor capabilities, currently relying only on the file access check.\n\nResizing a BAR modifies PCI device configuration and can disrupt active\ndrivers.  After the upcoming conversion to static attributes, it will also\ntrigger resource file updates via sysfs_update_groups().\n\nAdd a CAP_SYS_ADMIN check to prevent unprivileged users from performing BAR\nresize operations."
        }
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      "providerMetadata": {
        "dateUpdated": "2026-09-24T16:04:54.215Z",
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    "datePublished": "2026-09-24T16:04:54.215Z",
    "dateReserved": "2026-09-24T16:01:01.151Z",
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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.

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.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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GHSA-6XM8-36MH-MXJ7

CVE-2026-97505 (GCVE-0-2026-97505)

Tags

Sightings

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