FKIE_CVE-2026-80621

Vulnerability from fkie_nvd - Published: 2026-08-28 08:16 - Updated: 2026-08-28 08:16
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: PCI: dwc: Avoid dwc_pcie_rasdes_debugfs_deinit() NULL dereference when no RAS DES capability dwc_pcie_rasdes_debugfs_init() returns success when the controller has no RAS DES capability, leaving pci->debugfs->rasdes_info unset. The common debugfs teardown path still calls dwc_pcie_rasdes_debugfs_deinit(), which dereferences rasdes_info unconditionally. Return early when no RAS DES state was allocated. In that case no RAS DES mutex was initialized, so there is nothing to destroy. [mani: reworded subject]
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/26b67fa10ef84ea667942491b50e6261a45f098d
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/514b84b1bf30f75f32c2fa66734dc1a177abb73e
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/855870e8c59b97fd424e8fa3543c9e289bb48fac
Impacted products
Vendor Product Version
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{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/pci/controller/dwc/pcie-designware-debugfs.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "514b84b1bf30f75f32c2fa66734dc1a177abb73e",
              "status": "affected",
              "version": "4fbfa17f9a075593281034f566ca79cbf4930c82",
              "versionType": "git"
            },
            {
              "lessThan": "855870e8c59b97fd424e8fa3543c9e289bb48fac",
              "status": "affected",
              "version": "4fbfa17f9a075593281034f566ca79cbf4930c82",
              "versionType": "git"
            },
            {
              "lessThan": "26b67fa10ef84ea667942491b50e6261a45f098d",
              "status": "affected",
              "version": "4fbfa17f9a075593281034f566ca79cbf4930c82",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/pci/controller/dwc/pcie-designware-debugfs.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.15"
            },
            {
              "lessThan": "6.15",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.40",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nPCI: dwc: Avoid dwc_pcie_rasdes_debugfs_deinit() NULL dereference when no RAS DES capability\n\ndwc_pcie_rasdes_debugfs_init() returns success when the controller has no\nRAS DES capability, leaving pci-\u003edebugfs-\u003erasdes_info unset. The common\ndebugfs teardown path still calls dwc_pcie_rasdes_debugfs_deinit(), which\ndereferences rasdes_info unconditionally.\n\nReturn early when no RAS DES state was allocated. In that case no RAS DES\nmutex was initialized, so there is nothing to destroy.\n\n[mani: reworded subject]"
    }
  ],
  "id": "CVE-2026-80621",
  "lastModified": "2026-08-28T08:16:46.220",
  "metrics": {},
  "published": "2026-08-28T08:16:46.220",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/26b67fa10ef84ea667942491b50e6261a45f098d"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/514b84b1bf30f75f32c2fa66734dc1a177abb73e"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/855870e8c59b97fd424e8fa3543c9e289bb48fac"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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