FKIE_CVE-2026-68319

Vulnerability from fkie_nvd - Published: 2026-08-10 13:20 - Updated: 2026-08-17 05:18
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: pds_core: fix deadlock between reset thread and remove pci_reset_function() acquires device_lock before performing the reset. pdsc_remove() is called by the PCI core with device_lock already held. If pdsc_pci_reset_thread() is running when pdsc_remove() is called, destroy_workqueue() will block waiting for the work to complete, while the work is blocked waiting for device_lock - deadlock. Use pci_try_reset_function() which uses pci_dev_trylock() internally. This acquires both the device lock and the PCI config access lock without blocking - if either lock is contended, it returns -EAGAIN immediately. This avoids the deadlock while also ensuring proper config space access serialization during the reset. The pci_dev_get/put calls are also removed as they were unnecessary - the driver-owned workqueue is destroyed in pdsc_remove(), guaranteeing the work completes before remove returns. The PCI core holds its reference to pci_dev throughout the entire unbind sequence.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/19ef775c91c6bf4bd2b60f6616f4e28b621cdd6a
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/54f905821f26d385fba407a920b51f0a752c76dc
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/90d9f3ef28843e6c35149324b8eefb427a7435c2
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ab0eec0ff0a421737a37f510ceab5c6ea59cd05a
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/amd/pds_core/core.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "90d9f3ef28843e6c35149324b8eefb427a7435c2",
              "status": "affected",
              "version": "81665adf25d28a00a986533f1d3a5df76b79cad9",
              "versionType": "git"
            },
            {
              "lessThan": "19ef775c91c6bf4bd2b60f6616f4e28b621cdd6a",
              "status": "affected",
              "version": "81665adf25d28a00a986533f1d3a5df76b79cad9",
              "versionType": "git"
            },
            {
              "lessThan": "54f905821f26d385fba407a920b51f0a752c76dc",
              "status": "affected",
              "version": "81665adf25d28a00a986533f1d3a5df76b79cad9",
              "versionType": "git"
            },
            {
              "lessThan": "ab0eec0ff0a421737a37f510ceab5c6ea59cd05a",
              "status": "affected",
              "version": "81665adf25d28a00a986533f1d3a5df76b79cad9",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "38407914d48273d7f8ab765b9243658afe1c3ab6",
              "versionType": "git"
            },
            {
              "lessThan": "6.9",
              "status": "affected",
              "version": "6.8.7",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/amd/pds_core/core.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.9"
            },
            {
              "lessThan": "6.9",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.101",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.42",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.6",
              "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\npds_core: fix deadlock between reset thread and remove\n\npci_reset_function() acquires device_lock before performing the reset.\npdsc_remove() is called by the PCI core with device_lock already held.\nIf pdsc_pci_reset_thread() is running when pdsc_remove() is called,\ndestroy_workqueue() will block waiting for the work to complete, while\nthe work is blocked waiting for device_lock - deadlock.\n\nUse pci_try_reset_function() which uses pci_dev_trylock() internally.\nThis acquires both the device lock and the PCI config access lock\nwithout blocking - if either lock is contended, it returns -EAGAIN\nimmediately. This avoids the deadlock while also ensuring proper\nconfig space access serialization during the reset.\n\nThe pci_dev_get/put calls are also removed as they were unnecessary -\nthe driver-owned workqueue is destroyed in pdsc_remove(), guaranteeing\nthe work completes before remove returns. The PCI core holds its\nreference to pci_dev throughout the entire unbind sequence."
    }
  ],
  "id": "CVE-2026-68319",
  "lastModified": "2026-08-17T05:18:34.827",
  "metrics": {},
  "published": "2026-08-10T13:20:21.933",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/19ef775c91c6bf4bd2b60f6616f4e28b621cdd6a"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/54f905821f26d385fba407a920b51f0a752c76dc"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/90d9f3ef28843e6c35149324b8eefb427a7435c2"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/ab0eec0ff0a421737a37f510ceab5c6ea59cd05a"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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