{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2025-40293 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2025-40293 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-2025-40293 and fix it if it is affected.\n\nWhat it is: CVE-2025-40293 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-2025-40293 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-2025-40293/ (Markdown: https://insights.sbomify.com/CVE-2025-40293/index.md)","id":"CVE-2025-40293","markdown":"https://insights.sbomify.com/CVE-2025-40293/index.md","name":"CVE-2025-40293","record":{"aliases":["BELL-CVE-2025-40293","DEBIAN-CVE-2025-40293","GHSA-q92x-chq8-5c2g","ROOT-OS-DEBIAN-12-CVE-2025-40293","ROOT-OS-DEBIAN-13-CVE-2025-40293","ROOT-OS-UBUNTU-2404-CVE-2025-40293","UBUNTU-CVE-2025-40293"],"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 local attacker can trigger a divide-by-zero error in the Linux kernel's iommufd dirty tracking, causing a system crash.","user_interaction":"not_required","vuln_class":"integer_overflow"},"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\niommufd: Don't overflow during division for dirty tracking\n\nIf pgshift is 63 then BITS_PER_TYPE(*bitmap-\u003ebitmap) * pgsize will overflow\nto 0 and this triggers divide by 0.\n\nIn this case the index should just be 0, so reorganize things to divide\nby shift and avoid hitting any overflows.","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":"iommufd: Don't overflow during division for dirty tracking","id":"CVE-2025-40293","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"integer_overflow","year":"2025"},"n_packages":0,"n_references":5,"next":{"headline":"Bluetooth: MGMT: Fix OOB access in parse_adv_monitor_pattern()","id":"CVE-2025-40294"},"packages":[],"prev":{"headline":"virtio-net: fix received length check in big packets","id":"CVE-2025-40292"},"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 local attacker can trigger a divide-by-zero error in the Linux kernel's iommufd dirty tracking, causing a system crash.","url":"https://insights.sbomify.com/CVE-2025-40293/"}