{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2025-40299 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2025-40299 is a vulnerability in Linux, published on 8 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-2025-40299 and fix it if it is affected.\n\nWhat it is: CVE-2025-40299 is a vulnerability in Linux, published on 8 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-2025-40299 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-2025-40299/ (Markdown: https://insights.sbomify.com/CVE-2025-40299/index.md)","id":"CVE-2025-40299","markdown":"https://insights.sbomify.com/CVE-2025-40299/index.md","name":"CVE-2025-40299","record":{"aliases":["BELL-CVE-2025-40299","DEBIAN-CVE-2025-40299","GHSA-3x8g-vpq9-jv7h","UBUNTU-CVE-2025-40299"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel driver","requires_auth":"none","summary":"A missing function implementation in the gve network driver causes a null pointer dereference, leading to a kernel crash and denial of service.","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\ngve: Implement gettimex64 with -EOPNOTSUPP\n\ngve implemented a ptp_clock for sole use of do_aux_work at this time.\nptp_clock_gettime() and ptp_sys_offset() assume every ptp_clock has\nimplemented either gettimex64 or gettime64. Stub gettimex64 and return\n-EOPNOTSUPP to prevent NULL dereferencing.","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":"gve: Implement gettimex64 with -EOPNOTSUPP","id":"CVE-2025-40299","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"null_dereference","year":"2025"},"n_packages":0,"n_references":2,"next":{"headline":"x86/vmscape: Add conditional IBPB mitigation","id":"CVE-2025-40300"},"packages":[],"prev":{"headline":"gve: Implement settime64 with -EOPNOTSUPP","id":"CVE-2025-40298"},"products":["Linux"],"published":"2025-12-08","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 function implementation in the gve network driver causes a null pointer dereference, leading to a kernel crash and denial of service.","url":"https://insights.sbomify.com/CVE-2025-40299/"}