{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2025-40057 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2025-40057 is a denial of service vulnerability in Linux, published on 28 Oct 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-2025-40057 and fix it if it is affected.\n\nWhat it is: CVE-2025-40057 is a denial of service vulnerability in Linux, published on 28 Oct 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-2025-40057 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-2025-40057/ (Markdown: https://insights.sbomify.com/CVE-2025-40057/index.md)","id":"CVE-2025-40057","markdown":"https://insights.sbomify.com/CVE-2025-40057/index.md","name":"CVE-2025-40057","record":{"aliases":["AZL-68930","BELL-CVE-2025-40057","DEBIAN-CVE-2025-40057","GHSA-29fx-85hc-pfpw","ROOT-OS-DEBIAN-12-CVE-2025-40057","ROOT-OS-UBUNTU-2204-CVE-2025-40057","ROOT-OS-UBUNTU-2404-CVE-2025-40057","UBUNTU-CVE-2025-40057"],"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":"high_privilege","summary":"A local attacker with high privileges can trigger a kernel warning and potential denial of service by setting an excessively large value for max_vclocks in the PTP subsystem.","user_interaction":"not_required","vuln_class":"denial_of_service"},"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\nptp: Add a upper bound on max_vclocks\n\nsyzbot reported WARNING in max_vclocks_store.\n\nThis occurs when the argument max is too large for kcalloc to handle.\n\nExtend the guard to guard against values that are too large for\nkcalloc","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":"ptp: Add a upper bound on max_vclocks","id":"CVE-2025-40057","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"denial_of_service","year":"2025"},"n_packages":0,"n_references":4,"next":{"headline":"iommu/vt-d: Disallow dirty tracking if incoherent page walk","id":"CVE-2025-40058"},"packages":[],"prev":{"headline":"vhost: vringh: Fix copy_to_iter return value check","id":"CVE-2025-40056"},"products":["Linux"],"published":"2025-10-28","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":"2026-10-21","vendors":["Linux"]},"summary":"A local attacker with high privileges can trigger a kernel warning and potential denial of service by setting an excessively large value for max_vclocks in the PTP subsystem.","url":"https://insights.sbomify.com/CVE-2025-40057/"}