{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2025-40056 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2025-40056 is a memory corruption 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-2025-40056 and fix it if it is affected.\n\nWhat it is: CVE-2025-40056 is a memory corruption 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-2025-40056 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-2025-40056/ (Markdown: https://insights.sbomify.com/CVE-2025-40056/index.md)","id":"CVE-2025-40056","markdown":"https://insights.sbomify.com/CVE-2025-40056/index.md","name":"CVE-2025-40056","record":{"aliases":["AZL-68867","BELL-CVE-2025-40056","DEBIAN-CVE-2025-40056","GHSA-qqfp-3f8f-fv6r","ROOT-OS-DEBIAN-12-CVE-2025-40056","ROOT-OS-DEBIAN-13-CVE-2025-40056","ROOT-OS-UBUNTU-2404-CVE-2025-40056","UBUNTU-CVE-2025-40056"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["denial_of_service","code_execution"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel","requires_auth":"none","summary":"A flaw in the Linux kernel vhost vringh component allows attackers to cause memory corruption or denial of service due to improper return value checking.","user_interaction":"not_required","vuln_class":"memory_corruption"},"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\nvhost: vringh: Fix copy_to_iter return value check\n\nThe return value of copy_to_iter can't be negative, check whether the\ncopied length is equal to the requested length instead of checking for\nnegative values.","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":"vhost: vringh: Fix copy_to_iter return value check","id":"CVE-2025-40056","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"memory_corruption","year":"2025"},"n_packages":0,"n_references":5,"next":{"headline":"ptp: Add a upper bound on max_vclocks","id":"CVE-2025-40057"},"packages":[],"prev":{"headline":"ocfs2: fix double free in user_cluster_connect()","id":"CVE-2025-40055"},"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":"2026-05-11","vendors":["Linux"]},"summary":"A flaw in the Linux kernel vhost vringh component allows attackers to cause memory corruption or denial of service due to improper return value checking.","url":"https://insights.sbomify.com/CVE-2025-40056/"}