{"answers":{"affected":"It affects 2 products.","exploited":"There is no known exploitation of CVE-2025-38231 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2025-38231 is a medium-severity vulnerability in Debian Debian Linux, published on 4 Jul 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-2025-38231 and fix it if it is affected.\n\nWhat it is: CVE-2025-38231 is a medium-severity vulnerability in Debian Debian Linux, published on 4 Jul 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-2025-38231 in the wild and no public exploit code.\n\nAffected product: Debian Debian 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-2025-38231/ (Markdown: https://insights.sbomify.com/CVE-2025-38231/index.md)","id":"CVE-2025-38231","markdown":"https://insights.sbomify.com/CVE-2025-38231/index.md","name":"CVE-2025-38231","record":{"aliases":["AZL-64722","BELL-CVE-2025-38231","DEBIAN-CVE-2025-38231","GHSA-7q5j-m65f-w95r","ROOT-OS-DEBIAN-11-CVE-2025-38231","ROOT-OS-DEBIAN-12-CVE-2025-38231","ROOT-OS-UBUNTU-2204-CVE-2025-38231","ROOT-OS-UBUNTU-2404-CVE-2025-38231","UBUNTU-CVE-2025-38231"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel NFS","requires_auth":"low_privilege","summary":"A race condition in the Linux kernel NFS server can cause a NULL pointer dereference, leading to a denial of service.","user_interaction":"not_required","vuln_class":"null_dereference"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Linux","cpe":[{"product":"debian_linux","vendor":"debian"},{"product":"linux_kernel","vendor":"linux"}],"cvss":{"score":5.5,"severity":"medium","source":"nvd","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-476","name":"NULL Pointer Dereference"}],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnfsd: Initialize ssc before laundromat_work to prevent NULL dereference\n\nIn nfs4_state_start_net(), laundromat_work may access nfsd_ssc through\nnfs4_laundromat -\u003e nfsd4_ssc_expire_umount. If nfsd_ssc isn't initialized,\nthis can cause NULL pointer dereference.\n\nNormally the delayed start of laundromat_work allows sufficient time for\nnfsd_ssc initialization to complete. However, when the kernel waits too\nlong for userspace responses (e.g. in nfs4_state_start_net -\u003e\nnfsd4_end_grace -\u003e nfsd4_record_grace_done -\u003e nfsd4_cld_grace_done -\u003e\ncld_pipe_upcall -\u003e __cld_pipe_upcall -\u003e wait_for_completion path), the\ndelayed work may start before nfsd_ssc initialization finishes.\n\nFix this by moving nfsd_ssc initialization before starting laundromat_work.","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":"nfsd: Initialize ssc before laundromat_work to prevent NULL dereference","id":"CVE-2025-38231","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"debian:debian_linux","products":["debian:debian_linux","linux:linux_kernel"],"type":"null_dereference","year":"2025"},"n_packages":0,"n_references":7,"next":{"headline":"NFSD: fix race between nfsd registration and exports_proc","id":"CVE-2025-38232"},"packages":[],"prev":{"headline":"jfs: validate AG parameters in dbMount() to prevent crashes","id":"CVE-2025-38230"},"products":["Linux"],"published":"2025-07-04","related":[{"cvss_score":10,"headline":"ProFTPD Improper Access Control","id":"CVE-2015-3306","kev_date_added":"2026-10-08","published":"2015-05-18"},{"cvss_score":9.9,"headline":"RoundCube Webmail Deserialization of Untrusted Data","id":"CVE-2025-49113","kev_date_added":"2026-02-20","published":"2025-06-02"},{"cvss_score":9.8,"headline":"GNU InetUtils Argument Injection","id":"CVE-2026-24061","kev_date_added":"2026-01-26","published":"2026-01-21"},{"cvss_score":9.8,"headline":"Linux Kernel Improper Check for Unusual or Exceptional Conditions","id":"CVE-2025-39682","kev_date_added":"2026-09-18","published":"2025-09-05"},{"cvss_score":9.8,"headline":"Mozilla Firefox Use-After-Free","id":"CVE-2024-9680","kev_date_added":"2024-10-15","published":"2024-10-09"},{"cvss_score":9.8,"headline":"RARLAB UnRAR Directory Traversal","id":"CVE-2022-30333","kev_date_added":"2022-08-09","published":"2022-05-09"},{"cvss_score":9.8,"headline":"Roundcube Webmail SQL Injection","id":"CVE-2021-44026","kev_date_added":"2023-06-22","published":"2021-11-19"}],"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)"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2026-10-15","vendors":["Linux"]},"summary":"A race condition in the Linux kernel NFS server can cause a NULL pointer dereference, leading to a denial of service.","url":"https://insights.sbomify.com/CVE-2025-38231/"}