btrfs: fix possible memory leak in btrfs_get_dev_args_from_path()

{
  "id": "b0f92021947c92f9f4e5340fc41fbd13c966df89724852d97d231d3ccd324ab4",
  "url": "https://osv.dev/vulnerability/CVE-2022-49996",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "btrfs: fix possible memory leak in btrfs_get_dev_args_from_path()",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: btrfs: fix possible memory leak in btrfs_get_dev_args_from_path() In btrfs_get_dev_args_from_path(), btrfs_get_bdev_and_sb() can fail if the path is invalid. In this case, btrfs_get_dev_args_from_path() returns directly without freeing args->uuid and args->fsid allocated before, which causes memory leak. To fix these possible leaks, when btrfs_get_bdev_and_sb() fails, btrfs_put_dev_args_from_path() is called to clean up the memory.",
    "evidence": "osv:CVE-2022-49996",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "5.15.64",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.19.6",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2022-49996",
      "aliases": [
        "CVE-2022-49996"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "321a81835b4aed4f717f89921286f6544ffa8be9"
                },
                {
                  "fixed": "5f52402c77013e4a826394b807dd5ea4dc83bd72"
                }
              ]
            },
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "faa775c41d655a4786e9d53cb075a77bb5a75f66"
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                  "fixed": "4b124ad87244cd7f0883c5eaa38d2326b2154cad"
                },
                {
                  "fixed": "9ea0106a7a3d8116860712e3f17cd52ce99f6707"
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            },
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "5.15.54"
                },
                {
                  "fixed": "5.15.64"
                }
              ]
            }
          ],
          "versions": [
            "v5.15.63",
            "v5.15.62",
            "v5.15.61",
            "v5.15.60",
            "v5.15.59",
            "v5.15.58",
            "v5.15.57",
            "v5.15.56",
            "v5.15.55",
            "v5.15.54"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-49996.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "5.15.64"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.16.0"
                },
                {
                  "fixed": "5.19.6"
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              ]
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          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-49996.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:42.851717272Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/4b124ad87244cd7f0883c5eaa38d2326b2154cad",
        "https://git.kernel.org/stable/c/5f52402c77013e4a826394b807dd5ea4dc83bd72",
        "https://git.kernel.org/stable/c/9ea0106a7a3d8116860712e3f17cd52ce99f6707",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49996.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2022-49996",
        "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-2022-49996.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2022-49996",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 510235,
  "published_at": "2025-06-18T11:00:56.175+00:00"
}