{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2023-53867 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2023-53867 is a critical use after free vulnerability in Linux, published on 24 Dec 2025. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2023-53867 and fix it if it is affected.\n\nWhat it is: CVE-2023-53867 is a critical use after free vulnerability in Linux, published on 24 Dec 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2023-53867 in the wild and no public exploit code.\n\nAffected product: Linux. 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-2023-53867/ (Markdown: https://insights.sbomify.com/CVE-2023-53867/index.md)","id":"CVE-2023-53867","markdown":"https://insights.sbomify.com/CVE-2023-53867/index.md","name":"CVE-2023-53867","record":{"aliases":["BELL-CVE-2023-53867","DEBIAN-CVE-2023-53867","GHSA-f688-j3hq-jm53","ROOT-OS-DEBIAN-11-CVE-2023-53867","ROOT-OS-UBUNTU-2204-CVE-2023-53867","UBUNTU-CVE-2023-53867"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["denial_of_service","code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Linux kernel","requires_auth":"none","summary":"A use-after-free vulnerability in the Linux kernel's Ceph filesystem allows attackers to cause a crash or potentially execute code via race conditions during cap trimming.","user_interaction":"not_required","vuln_class":"use_after_free"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Linux","cpe":[],"cvss":{"score":9.8,"severity":"critical","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nceph: fix potential use-after-free bug when trimming caps\n\nWhen trimming the caps and just after the 'session-\u003es_cap_lock' is\nreleased in ceph_iterate_session_caps() the cap maybe removed by\nanother thread, and when using the stale cap memory in the callbacks\nit will trigger use-after-free crash.\n\nWe need to check the existence of the cap just after the 'ci-\u003ei_ceph_lock'\nbeing acquired. And do nothing if it's already removed.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"ceph: fix potential use-after-free bug when trimming caps","id":"CVE-2023-53867","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"use_after_free","year":"2023"},"n_packages":0,"n_references":4,"next":{"headline":"Coppermine Gallery 1.6.25 Remote Code Execution via Plugin Upload","id":"CVE-2023-53868"},"packages":[],"prev":{"headline":"ASoC: soc-compress: Reposition and add pcm_mutex","id":"CVE-2023-53866"},"products":["Linux"],"published":"2025-12-24","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"yes","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-10-15","vendors":["Linux"]},"summary":"A use-after-free vulnerability in the Linux kernel's Ceph filesystem allows attackers to cause a crash or potentially execute code via race conditions during cap trimming.","url":"https://insights.sbomify.com/CVE-2023-53867/"}