{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "e2355d513b89a2cb511b4ded0deb426cdb01acd0"
            },
            {
              "fixed": "ebb27b7399ab8b9eb1f792b329aa5f6250c590d4"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "04e85a3285b0e5c5af6fd2c0fd6e95ffecc01945"
            },
            {
              "fixed": "fbe06a3058114bf95a17a4941b205f4b321c6f0a"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "7253b4fed46471cc247c6cacefac890a8472c083"
            },
            {
              "fixed": "943ed56606a7ab2fe5a99cad572dd17d484310c7"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "78c6e39fef5c428960aff742149bba302dd46f5a"
            },
            {
              "fixed": "a19b61fdb958ffadbba85b43c991eb9fc70c1c1c"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "a4e772898f8bf2e7e1cf661a12c60a5612c4afab"
            },
            {
              "fixed": "0425aaf20b407d2f2cf3bf469808e4a35f9abb8b"
            },
            {
              "fixed": "bd435f4b738130d732ef64e0e57e45185f77165d"
            },
            {
              "fixed": "8b08ea9690b212b7bf7f12414039259cf34b1aa0"
            },
            {
              "fixed": "9368d1ee62829b08aa31836b3ca003803caf0b72"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "0790b89c7e911003b8c50ae50e3ac7645de1fae9"
            },
            {
              "last_affected": "df77a678c33871a6e4ac5b54a71662f1d702335b"
            },
            {
              "last_affected": "81c68e218ab883dfa368460a59b674084c0240da"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "5.10.226"
            },
            {
              "fixed": "5.10.252"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "5.15.167"
            },
            {
              "fixed": "5.15.202"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "6.1.110"
            },
            {
              "fixed": "6.1.165"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "6.6.51"
            },
            {
              "fixed": "6.6.128"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "4.19.322"
            },
            {
              "fixed": "4.20"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "5.4.284"
            },
            {
              "fixed": "5.5"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "6.10.10"
            },
            {
              "fixed": "6.11"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.10.252"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.202"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.165"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.128"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.75"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.11.0"
            },
            {
              "fixed": "6.18.16"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.19.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43211.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nPCI: Fix pci_slot_trylock() error handling\n\nCommit a4e772898f8b (\"PCI: Add missing bridge lock to pci_bus_lock()\")\ndelegates the bridge device's pci_dev_trylock() to pci_bus_trylock() in\npci_slot_trylock(), but it forgets to remove the corresponding\npci_dev_unlock() when pci_bus_trylock() fails.\n\nBefore a4e772898f8b, the code did:\n\n  if (!pci_dev_trylock(dev)) /* \u003c- lock bridge device */\n    goto unlock;\n  if (dev-\u003esubordinate) {\n    if (!pci_bus_trylock(dev-\u003esubordinate)) {\n      pci_dev_unlock(dev);   /* \u003c- unlock bridge device */\n      goto unlock;\n    }\n  }\n\nAfter a4e772898f8b the bridge-device lock is no longer taken, but the\npci_dev_unlock(dev) on the failure path was left in place, leading to the\nbug.\n\nThis yields one of two errors:\n\n  1. A warning that the lock is being unlocked when no one holds it.\n  2. An incorrect unlock of a lock that belongs to another thread.\n\nFix it by removing the now-redundant pci_dev_unlock(dev) on the failure\npath.\n\n[Same patch later posted by Keith at\nhttps://patch.msgid.link/20260116184150.3013258-1-kbusch@meta.com]",
  "id": "CVE-2026-43211",
  "modified": "2026-07-15T01:49:01.450192943Z",
  "published": "2026-05-06T11:28:14.423Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0425aaf20b407d2f2cf3bf469808e4a35f9abb8b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8b08ea9690b212b7bf7f12414039259cf34b1aa0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9368d1ee62829b08aa31836b3ca003803caf0b72"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/943ed56606a7ab2fe5a99cad572dd17d484310c7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a19b61fdb958ffadbba85b43c991eb9fc70c1c1c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bd435f4b738130d732ef64e0e57e45185f77165d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ebb27b7399ab8b9eb1f792b329aa5f6250c590d4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fbe06a3058114bf95a17a4941b205f4b321c6f0a"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43211.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-43211"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "PCI: Fix pci_slot_trylock() error handling"
}