CVE-2026-68319 (GCVE-0-2026-68319)

Vulnerability from cvelistv5 – Published: 2026-08-10 12:02 – Updated: 2026-08-17 05:03
VLAI
Title
pds_core: fix deadlock between reset thread and remove
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.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 81665adf25d28a00a986533f1d3a5df76b79cad9 , < 90d9f3ef28843e6c35149324b8eefb427a7435c2 (git)
Affected: 81665adf25d28a00a986533f1d3a5df76b79cad9 , < 19ef775c91c6bf4bd2b60f6616f4e28b621cdd6a (git)
Affected: 81665adf25d28a00a986533f1d3a5df76b79cad9 , < 54f905821f26d385fba407a920b51f0a752c76dc (git)
Affected: 81665adf25d28a00a986533f1d3a5df76b79cad9 , < ab0eec0ff0a421737a37f510ceab5c6ea59cd05a (git)
Affected: 38407914d48273d7f8ab765b9243658afe1c3ab6 (git)
Affected: 6.8.7 , < 6.9 (semver)
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Linux Linux Affected: 6.9
Unaffected: 0 , < 6.9 (semver)
Unaffected: 6.12.101 , ≤ 6.12.* (semver)
Unaffected: 6.18.42 , ≤ 6.18.* (semver)
Unaffected: 7.1.6 , ≤ 7.1.* (semver)
Unaffected: 7.2 , ≤ * (original_commit_for_fix)
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/amd/pds_core/core.c"
          ],
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          "vendor": "Linux",
          "versions": [
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              "versionType": "original_commit_for_fix"
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        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
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              "cpeMatch": [
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              "negate": false,
              "operator": "OR"
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      ],
      "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."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-17T05:03:16.659Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/90d9f3ef28843e6c35149324b8eefb427a7435c2"
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          "url": "https://git.kernel.org/stable/c/19ef775c91c6bf4bd2b60f6616f4e28b621cdd6a"
        },
        {
          "url": "https://git.kernel.org/stable/c/54f905821f26d385fba407a920b51f0a752c76dc"
        },
        {
          "url": "https://git.kernel.org/stable/c/ab0eec0ff0a421737a37f510ceab5c6ea59cd05a"
        }
      ],
      "title": "pds_core: fix deadlock between reset thread and remove",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
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  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-68319",
    "datePublished": "2026-08-10T12:02:54.173Z",
    "dateReserved": "2026-07-30T09:28:09.382Z",
    "dateUpdated": "2026-08-17T05:03:16.659Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-68319",
      "date": "2026-08-20",
      "epss": "0.00168",
      "percentile": "0.06511"
    },
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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-08-12T22:18:27+00:00",
      "cve": "CVE-2026-68319",
      "id": "CVE-2026-68319",
      "initial_release_date": "2026-08-10T00:00:00+00:00",
      "product_status:known_affected": "1",
      "product_status:known_not_affected": "275",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: pds_core: fix deadlock between reset thread and remove",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-68319.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-08-11T23:48:04Z",
      "cve": "CVE-2026-68319",
      "id": "CVE-2026-68319",
      "initial_release_date": "2026-08-11T23:48:04Z",
      "product_status:known_affected": "29",
      "product_status:known_not_affected": "267",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-68319",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-68319.json",
      "version": "2"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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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.


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