btrfs: fix inode list leak during backref walking at resolve_indirect_refs()

{
  "id": "394e056a124a8d742c65479e9b65aa5970f37fff94f27ae83ea8609e47fbff32",
  "url": "https://osv.dev/vulnerability/CVE-2022-49914",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "btrfs: fix inode list leak during backref walking at resolve_indirect_refs()",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: btrfs: fix inode list leak during backref walking at resolve_indirect_refs() During backref walking, at resolve_indirect_refs(), if we get an error we jump to the 'out' label and call ulist_free() on the 'parents' ulist, which frees all the elements in the ulist - however that does not free any inode lists that may be attached to elements, through the 'aux' field of a ulist node, so we end up leaking lists if we have any attached to the unodes. Fix this by calling free_leaf_list() instead of ulist_free() when we exit from resolve_indirect_refs(). The static function free_leaf_list() is moved up for this to be possible and it's slightly simplified by removing unnecessary code.",
    "evidence": "osv:CVE-2022-49914",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "4.14.299",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "4.19.265",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.4.224",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.10.154",
            "evidence": "/affected/1/ranges"
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          {
            "value": "5.15.78",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.0.8",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2022-49914",
      "aliases": [
        "CVE-2022-49914"
      ],
      "affected": [
        {
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              "type": "GIT",
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                  "fixed": "396515db923ad5cbeb179d6b88927870b4cbebb7"
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                  "fixed": "5614dc3a47e3310fbc77ea3b67eaadd1c6417bf1"
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          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-49914.json"
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          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-49914.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:32.728477904Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/2c0329406bb28109c07c6e23e5e3e0fa618a95d7",
        "https://git.kernel.org/stable/c/396515db923ad5cbeb179d6b88927870b4cbebb7",
        "https://git.kernel.org/stable/c/5614dc3a47e3310fbc77ea3b67eaadd1c6417bf1",
        "https://git.kernel.org/stable/c/6ba3479f9e96b9ad460c7e77abc26dd16e5dec4f",
        "https://git.kernel.org/stable/c/a52e24c7fcc3c5ce3588a14e3663c00868d36623",
        "https://git.kernel.org/stable/c/b1dc9019bb5f89abae85645de1a2dd4830c1f8e9",
        "https://git.kernel.org/stable/c/cded2c89774b99b67c98147ae103ea878c92a206",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49914.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2022-49914",
        "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-2022-49914.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2022-49914",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 499810,
  "published_at": "2025-05-01T14:10:55.581+00:00"
}