{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2025-40353 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2025-40353 is a denial of service vulnerability in Linux, published on 16 Dec 2025."},"fix_prompt":"Check this codebase for CVE-2025-40353 and fix it if it is affected.\n\nWhat it is: CVE-2025-40353 is a denial of service vulnerability in Linux, published on 16 Dec 2025. \nExploitation: There is no known exploitation of CVE-2025-40353 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-2025-40353/ (Markdown: https://insights.sbomify.com/CVE-2025-40353/index.md)","id":"CVE-2025-40353","markdown":"https://insights.sbomify.com/CVE-2025-40353/index.md","name":"CVE-2025-40353","record":{"aliases":["BELL-CVE-2025-40353","DEBIAN-CVE-2025-40353","GHSA-27p4-p9vc-8f94","ROOT-OS-UBUNTU-2204-CVE-2025-40353","ROOT-OS-UBUNTU-2404-CVE-2025-40353","UBUNTU-CVE-2025-40353"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"unknown","non_default_config":false,"product_category":"Linux kernel","requires_auth":"none","summary":"A kernel bug causes unnecessary warnings during memory migration, potentially leading to system instability or denial of service.","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\narm64: mte: Do not warn if the page is already tagged in copy_highpage()\n\nThe arm64 copy_highpage() assumes that the destination page is newly\nallocated and not MTE-tagged (PG_mte_tagged unset) and warns\naccordingly. However, following commit 060913999d7a (\"mm: migrate:\nsupport poisoned recover from migrate folio\"), folio_mc_copy() is called\nbefore __folio_migrate_mapping(). If the latter fails (-EAGAIN), the\ncopy will be done again to the same destination page. Since\ncopy_highpage() already set the PG_mte_tagged flag, this second copy\nwill warn.\n\nReplace the WARN_ON_ONCE(page already tagged) in the arm64\ncopy_highpage() with a comment.","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":"arm64: mte: Do not warn if the page is already tagged in copy_highpage()","id":"CVE-2025-40353","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"denial_of_service","year":"2025"},"n_packages":0,"n_references":3,"next":{"headline":"drm/amd/display: increase max link count and fix link-\u003eenc NULL pointer access","id":"CVE-2025-40354"},"packages":[],"prev":{"headline":"platform/mellanox: mlxbf-pmc: add sysfs_attr_init() to count_clock init","id":"CVE-2025-40352"},"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 kernel bug causes unnecessary warnings during memory migration, potentially leading to system instability or denial of service.","url":"https://insights.sbomify.com/CVE-2025-40353/"}