{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2025-68242 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2025-68242 is a missing authorization vulnerability in Linux, published on 16 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-2025-68242 and fix it if it is affected.\n\nWhat it is: CVE-2025-68242 is a missing authorization vulnerability in Linux, published on 16 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-2025-68242 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-2025-68242/ (Markdown: https://insights.sbomify.com/CVE-2025-68242/index.md)","id":"CVE-2025-68242","markdown":"https://insights.sbomify.com/CVE-2025-68242/index.md","name":"CVE-2025-68242","record":{"aliases":["BELL-CVE-2025-68242","DEBIAN-CVE-2025-68242","GHSA-x3jc-4xg9-3pr6","ROOT-OS-DEBIAN-13-CVE-2025-68242","UBUNTU-CVE-2025-68242"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["privilege_escalation","data_modify"],"network_reachable":"adjacent_or_local","non_default_config":true,"product_category":"Linux kernel NFS","requires_auth":"low_privilege","summary":"A missing UID check in Linux kernel NFS allows low-privileged users to modify file timestamps on delegated inodes, potentially leading to privilege escalation or data integrity issues.","user_interaction":"not_required","vuln_class":"missing_authorization"},"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\nNFS: Fix LTP test failures when timestamps are delegated\n\nThe utimes01 and utime06 tests fail when delegated timestamps are\nenabled, specifically in subtests that modify the atime and mtime\nfields using the 'nobody' user ID.\n\nThe problem can be reproduced as follow:\n\n# echo \"/media *(rw,no_root_squash,sync)\" \u003e\u003e /etc/exports\n# export -ra\n# mount -o rw,nfsvers=4.2 127.0.0.1:/media /tmpdir\n# cd /opt/ltp\n# ./runltp -d /tmpdir -s utimes01\n# ./runltp -d /tmpdir -s utime06\n\nThis issue occurs because nfs_setattr does not verify the inode's\nUID against the caller's fsuid when delegated timestamps are\npermitted for the inode.\n\nThis patch adds the UID check and if it does not match then the\nrequest is sent to the server for permission checking.","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":"NFS: Fix LTP test failures when timestamps are delegated","id":"CVE-2025-68242","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"missing_authorization","year":"2025"},"n_packages":0,"n_references":3,"next":{"headline":"NFS: Check the TLS certificate fields in nfs_match_client()","id":"CVE-2025-68243"},"packages":[],"prev":{"headline":"ipv4: route: Prevent rt_bind_exception() from rebinding stale fnhe","id":"CVE-2025-68241"},"products":["Linux"],"published":"2025-12-16","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":"2026-05-11","vendors":["Linux"]},"summary":"A missing UID check in Linux kernel NFS allows low-privileged users to modify file timestamps on delegated inodes, potentially leading to privilege escalation or data integrity issues.","url":"https://insights.sbomify.com/CVE-2025-68242/"}