{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-33150 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2026-33150 is a high-severity use after free vulnerability in libfuse, published on 20 Mar 2026. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-33150 and fix it if it is affected.\n\nWhat it is: CVE-2026-33150 is a high-severity use after free vulnerability in libfuse, published on 20 Mar 2026. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-33150 in the wild and no public exploit code.\n\nAffected product: libfuse. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-33150/ (Markdown: https://insights.sbomify.com/CVE-2026-33150/index.md)","id":"CVE-2026-33150","markdown":"https://insights.sbomify.com/CVE-2026-33150/index.md","name":"CVE-2026-33150","record":{"aliases":["BELL-CVE-2026-33150","DEBIAN-CVE-2026-33150","GHSA-qxv7-xrc2-qmfx"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["code_execution","denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux FUSE library","requires_auth":"low_privilege","summary":"A local attacker can trigger a use-after-free in libfuse's io_uring subsystem to crash processes or execute arbitrary code, particularly in containerized environments.","user_interaction":"not_required","vuln_class":"use_after_free"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"libfuse","vendor":"libfuse_project"}],"cvss":{"score":7.8,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-825","name":"Expired Pointer Dereference"},{"id":"CWE-416","name":"Use After Free"}],"description":"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.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":"2026-03-25","github_poc":1,"max_poc_stars":0,"metasploit":0,"nuclei":0,"refs":[{"date":"2026-03-25T05:48:59Z","kind":"github_poc","ref":"https://github.com/abhinavagarwal07/abhinavagarwal07.github.io","stars":0,"title":"RingWraith: CVE-2026-33150 and CVE-2026-33179 — Use-After-Free and NULL Dereference in libfuse io_uring"}],"tier":"poc_unverified"},"has_fix":true,"headline":"Use After Free in libfuse","id":"CVE-2026-33150","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"use_after_free","year":"2026"},"n_packages":0,"n_references":3,"next":{"headline":"socket.io allows an unbounded number of binary attachments","id":"CVE-2026-33151"},"packages":[],"prev":{"headline":"Tandoor Recipes Vulnerable to Host Header Injection","id":"CVE-2026-33149"},"products":["libfuse"],"published":"2026-03-20","related":[{"cvss_score":5.8,"headline":"Path traversal in n/a","id":"CVE-2010-3879","kev_date_added":null,"published":"2011-01-22"},{"cvss_score":5.5,"headline":"libfuse: NULL Pointer Dereference and Memory Leak in io_uring Queue Initialization","id":"CVE-2026-33179","kev_date_added":null,"published":"2026-03-20"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"},{"class":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-07-15","vendors":["libfuse"]},"summary":"A local attacker can trigger a use-after-free in libfuse's io_uring subsystem to crash processes or execute arbitrary code, particularly in containerized environments.","url":"https://insights.sbomify.com/CVE-2026-33150/"}