{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2023-53861 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2023-53861 is a vulnerability in Linux, published on 9 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-2023-53861 and fix it if it is affected.\n\nWhat it is: CVE-2023-53861 is a vulnerability in Linux, published on 9 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-2023-53861 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-2023-53861/ (Markdown: https://insights.sbomify.com/CVE-2023-53861/index.md)","id":"CVE-2023-53861","markdown":"https://insights.sbomify.com/CVE-2023-53861/index.md","name":"CVE-2023-53861","record":{"aliases":["BELL-CVE-2023-53861","DEBIAN-CVE-2023-53861","GHSA-9chw-7w35-c7qm","UBUNTU-CVE-2023-53861"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel","requires_auth":"none","summary":"A null pointer dereference in the Linux kernel ext4 filesystem allows local attackers to cause a system crash via corrupted group data.","user_interaction":"not_required","vuln_class":"null_dereference"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Linux","cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\next4: correct grp validation in ext4_mb_good_group\n\nGroup corruption check will access memory of grp and will trigger kernel\ncrash if grp is NULL. So do NULL check before corruption check.","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":"ext4: correct grp validation in ext4_mb_good_group","id":"CVE-2023-53861","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"null_dereference","year":"2023"},"n_packages":0,"n_references":6,"next":{"headline":"hfs: fix missing hfs_bnode_get() in __hfs_bnode_create","id":"CVE-2023-53862"},"packages":[],"prev":{"headline":"dm: don't attempt to queue IO under RCU protection","id":"CVE-2023-53860"},"products":["Linux"],"published":"2025-12-09","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2026-05-23","vendors":["Linux"]},"summary":"A null pointer dereference in the Linux kernel ext4 filesystem allows local attackers to cause a system crash via corrupted group data.","url":"https://insights.sbomify.com/CVE-2023-53861/"}