{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "9157d99f17384f362c65b02cec065e0aec5f0b56"
            },
            {
              "fixed": "033844748010a3b8265bf1c90b9ae8ffe4cd9ca7"
            }
          ],
          "repo": "https://github.com/libfuse/libfuse",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-qxv7-xrc2-qmfx"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-416"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33150.json"
  },
  "details": "libfuse is the reference implementation of the Linux FUSE. From version 3.18.0 to before version 3.18.2, a use-after-free vulnerability in the io_uring subsystem of libfuse allows a local attacker to crash FUSE filesystem processes and potentially execute arbitrary code. When io_uring thread creation fails due to resource exhaustion (e.g., cgroup pids.max), fuse_uring_start() frees the ring pool structure but stores the dangling pointer in the session state, leading to a use-after-free when the session shuts down. The trigger is reliable in containerized environments where cgroup pids.max limits naturally constrain thread creation. This issue has been patched in version 3.18.2.",
  "id": "CVE-2026-33150",
  "modified": "2026-04-01T23:09:16.770901873Z",
  "published": "2026-03-20T20:20:29.963Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/libfuse/libfuse/releases/tag/fuse-3.18.2"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33150.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/libfuse/libfuse/security/advisories/GHSA-qxv7-xrc2-qmfx"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-33150"
    },
    {
      "type": "FIX",
      "url": "https://github.com/libfuse/libfuse/commit/49fcd891a58f622c098e2ca67d66086f7b213836"
    }
  ],
  "schema_version": "1.7.3",
  "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": "Use After Free in libfuse"
}