iommu/vt-d: Fix PCI device refcount leak in has_external_pci()

{
  "id": "2a474ea0645725c39829f4054d1d21544f69419592545217dd7bb4d0a56064f0",
  "url": "https://osv.dev/vulnerability/CVE-2022-49000",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "iommu/vt-d: Fix PCI device refcount leak in has_external_pci()",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: iommu/vt-d: Fix PCI device refcount leak in has_external_pci() for_each_pci_dev() is implemented by pci_get_device(). The comment of pci_get_device() says that it will increase the reference count for the returned pci_dev and also decrease the reference count for the input pci_dev @from if it is not NULL. If we break for_each_pci_dev() loop with pdev not NULL, we need to call pci_dev_put() to decrease the reference count. Add the missing pci_dev_put() before 'return true' to avoid reference count leak.",
    "evidence": "osv:CVE-2022-49000",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "5.10.158",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.15.82",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.0.12",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2022-49000",
      "aliases": [
        "CVE-2022-49000"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "89a6079df791aeace2044ea93be1b397195824ec"
                },
                {
                  "fixed": "10ed7655a17f6a3eaecd1293830488259ccd5723"
                },
                {
                  "fixed": "b6eea8b2e858a20ad58ac62dc2de90fea2413f94"
                },
                {
                  "fixed": "17f67414718e6aba123335a33b7d15aa594fff34"
                },
                {
                  "fixed": "afca9e19cc720bfafc75dc5ce429c185ca93f31d"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-49000.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.0.0"
                },
                {
                  "fixed": "5.10.158"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.11.0"
                },
                {
                  "fixed": "5.15.82"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.16.0"
                },
                {
                  "fixed": "6.0.12"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-49000.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:51.012884914Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/10ed7655a17f6a3eaecd1293830488259ccd5723",
        "https://git.kernel.org/stable/c/17f67414718e6aba123335a33b7d15aa594fff34",
        "https://git.kernel.org/stable/c/afca9e19cc720bfafc75dc5ce429c185ca93f31d",
        "https://git.kernel.org/stable/c/b6eea8b2e858a20ad58ac62dc2de90fea2413f94",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49000.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2022-49000",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49000.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2022-49000",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 519595,
  "published_at": "2024-10-21T20:06:14.753+00:00"
}