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{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "CVE-2026-33150 CVE-2026-33179 libfuse",
          "vendor": "Cve",
          "versions": [
            {
              "status": "affected",
              "version": "unknown"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Abhinav Agarwal"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Two memory safety vulnerabilities in libfuse\u0027s io_uring code path\n(introduced in 3.18.0) have been fixed in libfuse 3.18.2. Only the\nio_uring transport is affected; the traditional /dev/fuse path is not.\n\nAffected versions: libfuse \u003e= 3.18.0, \u003c 3.18.2\nFixed in: libfuse 3.18.2\n  https://github.com/libfuse/libfuse/releases/tag/fuse-3.18.2\n\n\nCVE-2026-33150: Use-After-Free\nSeverity: High (CVSS 7.8)\nCWE: CWE-416\n\nUse-after-free in io_uring session shutdown path. A local user can\ncrash the FUSE daemon or potentially execute arbitrary code.\n\nAdvisory: https://github.com/libfuse/libfuse/security/advisories/GHSA-qxv7-xrc2-qmfx\nFix: https://github.com/libfuse/libfuse/commit/49fcd891a58f622c098e2ca67d66086f7b213836\nCredit: Abhinav Agarwal (reporter)\nRemediation review: Akshat Sinha\n\n\nCVE-2026-33179: NULL Pointer Dereference + Memory Leak\nSeverity: Moderate (CVSS 5.5)\nCWE: CWE-476\n\nMissing NULL checks and error-path cleanup in io_uring queue\ninitialization can crash the FUSE daemon on allocation failure\nand leak NUMA memory.\n\nAdvisory: https://github.com/libfuse/libfuse/security/advisories/GHSA-x669-v3mq-r358\nFix: https://github.com/libfuse/libfuse/commit/7beb86c09b6ec5aab14dc25256ed8a5ad18554d7\nCredit: Abhinav Agarwal (reporter)\nRemediation review: Akshat Sinha\n\n\nBoth issues were reported privately to the libfuse maintainer\nand fixed in a coordinated release.\n\nTimeline:\n  2026-03-16  Use-after-free vulnerability reported to libfuse maintainer\n  2026-03-17  NULL deref vulnerability reported to libfuse maintainer\n  2026-03-18  Release 3.18.2 with fixes\n  2026-03-19  GHSA advisories published (CVE-2026-33150, CVE-2026-33179)\n\n--\nAbhinav Agarwal\n_______________________________________________\nSent through the Full Disclosure mailing list\nhttps://nmap.org/mailman/listinfo/fulldisclosure\nWeb Archives \u0026 RSS: https://seclists.org/fulldisclosure/"
        }
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              "cweId": "CWE-416",
              "description": "CWE-416",
              "lang": "en",
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          "url": "https://github.com/libfuse/libfuse/security/advisories/GHSA-x669-v3mq-r358"
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        "discovery": "EXTERNAL"
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      "title": "CVE-2026-33150, CVE-2026-33179: libfuse io_uring memory safety vulnerabilities (use-after-free, NULL deref)",
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