{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2025-40227 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2025-40227 is a memory corruption vulnerability in Linux, published on 4 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-2025-40227 and fix it if it is affected.\n\nWhat it is: CVE-2025-40227 is a memory corruption vulnerability in Linux, published on 4 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-2025-40227 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-2025-40227/ (Markdown: https://insights.sbomify.com/CVE-2025-40227/index.md)","id":"CVE-2025-40227","markdown":"https://insights.sbomify.com/CVE-2025-40227/index.md","name":"CVE-2025-40227","record":{"aliases":["BELL-CVE-2025-40227","DEBIAN-CVE-2025-40227","GHSA-qwp2-9fw4-x3jx","UBUNTU-CVE-2025-40227"],"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":"low_privilege","summary":"A memory leak in the Linux kernel DAMON subsystem allows local attackers to exhaust system memory, causing denial of service.","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\nmm/damon/sysfs: dealloc commit test ctx always\n\nThe damon_ctx for testing online DAMON parameters commit inputs is\ndeallocated only when the test fails.  This means memory is leaked for\nevery successful online DAMON parameters commit.  Fix the leak by always\ndeallocating it.","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":"mm/damon/sysfs: dealloc commit test ctx always","id":"CVE-2025-40227","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"memory_corruption","year":"2025"},"n_packages":0,"n_references":2,"next":{"headline":"mm/damon/sysfs: catch commit test ctx alloc failure","id":"CVE-2025-40228"},"packages":[],"prev":{"headline":"firmware: arm_scmi: Account for failed debug initialization","id":"CVE-2025-40226"},"products":["Linux"],"published":"2025-12-04","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 memory leak in the Linux kernel DAMON subsystem allows local attackers to exhaust system memory, causing denial of service.","url":"https://insights.sbomify.com/CVE-2025-40227/"}