{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2023-54139 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2023-54139 is a high-severity memory corruption vulnerability in Linux, published on 24 Dec 2025. 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-2023-54139 and fix it if it is affected.\n\nWhat it is: CVE-2023-54139 is a high-severity memory corruption vulnerability in Linux, published on 24 Dec 2025. 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-2023-54139 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-2023-54139/ (Markdown: https://insights.sbomify.com/CVE-2023-54139/index.md)","id":"CVE-2023-54139","markdown":"https://insights.sbomify.com/CVE-2023-54139/index.md","name":"CVE-2023-54139","record":{"aliases":["BELL-CVE-2023-54139","DEBIAN-CVE-2023-54139","GHSA-8m37-c7gh-2jmr","UBUNTU-CVE-2023-54139"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["privilege_escalation","denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel tracing","requires_auth":"low_privilege","summary":"A missing bounds check in Linux kernel user_events allows negative write indices, potentially leading to out-of-bounds memory access and privilege escalation.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Linux","cpe":[],"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":[],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\ntracing/user_events: Ensure write index cannot be negative\n\nThe write index indicates which event the data is for and accesses a\nper-file array. The index is passed by user processes during write()\ncalls as the first 4 bytes. Ensure that it cannot be negative by\nreturning -EINVAL to prevent out of bounds accesses.\n\nUpdate ftrace self-test to ensure this occurs properly.","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":"tracing/user_events: Ensure write index cannot be negative","id":"CVE-2023-54139","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"memory_corruption","year":"2023"},"n_packages":0,"n_references":4,"next":{"headline":"nilfs2: fix WARNING in mark_buffer_dirty due to discarded buffer reuse","id":"CVE-2023-54140"},"packages":[],"prev":{"headline":"drm/msm: fix NULL-deref on irq uninstall","id":"CVE-2023-54138"},"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":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2026-08-05","vendors":["Linux"]},"summary":"A missing bounds check in Linux kernel user_events allows negative write indices, potentially leading to out-of-bounds memory access and privilege escalation.","url":"https://insights.sbomify.com/CVE-2023-54139/"}