{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "bcce8c74f1ce1e2731ac0261287897e3768767d8"
            },
            {
              "fixed": "21bc8e0ba5c2a081b0a2808c976d4c9dbddf1e48"
            },
            {
              "fixed": "b6422dff0e518245019233432b6bccfc30b73e2f"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "6.19.14"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43097.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nPCI: hv: Fix double ida_free in hv_pci_probe error path\n\nIf hv_pci_probe() fails after storing the domain number in\nhbus-\u003ebridge-\u003edomain_nr, there is a call to free this domain_nr via\npci_bus_release_emul_domain_nr(), however, during cleanup, the bridge\nrelease callback pci_release_host_bridge_dev() also frees the domain_nr\ncausing ida_free to be called on same ID twice and triggering following\nwarning:\n\n  ida_free called for id=28971 which is not allocated.\n  WARNING: lib/idr.c:594 at ida_free+0xdf/0x160, CPU#0: kworker/0:2/198\n  Call Trace:\n   pci_bus_release_emul_domain_nr+0x17/0x20\n   pci_release_host_bridge_dev+0x4b/0x60\n   device_release+0x3b/0xa0\n   kobject_put+0x8e/0x220\n   devm_pci_alloc_host_bridge_release+0xe/0x20\n   devres_release_all+0x9a/0xd0\n   device_unbind_cleanup+0x12/0xa0\n   really_probe+0x1c5/0x3f0\n   vmbus_add_channel_work+0x135/0x1a0\n\nFix this by letting pci core handle the free domain_nr and remove\nthe explicit free called in pci-hyperv driver.",
  "id": "CVE-2026-43097",
  "modified": "2026-07-08T05:36:08.047263731Z",
  "published": "2026-05-06T07:40:28.157Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/21bc8e0ba5c2a081b0a2808c976d4c9dbddf1e48"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b6422dff0e518245019233432b6bccfc30b73e2f"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43097.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-43097"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.7.5",
  "summary": "PCI: hv: Fix double ida_free in hv_pci_probe error path"
}