{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2025-40106 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2025-40106 is a denial of service vulnerability in Linux, published on 31 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-2025-40106 and fix it if it is affected.\n\nWhat it is: CVE-2025-40106 is a denial of service vulnerability in Linux, published on 31 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-2025-40106 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-2025-40106/ (Markdown: https://insights.sbomify.com/CVE-2025-40106/index.md)","id":"CVE-2025-40106","markdown":"https://insights.sbomify.com/CVE-2025-40106/index.md","name":"CVE-2025-40106","record":{"aliases":["BELL-CVE-2025-40106","DEBIAN-CVE-2025-40106","GHSA-6hvg-fq9h-5pm6","ROOT-OS-DEBIAN-11-CVE-2025-40106","ROOT-OS-DEBIAN-12-CVE-2025-40106","ROOT-OS-DEBIAN-13-CVE-2025-40106","ROOT-OS-UBUNTU-2204-CVE-2025-40106","ROOT-OS-UBUNTU-2404-CVE-2025-40106","UBUNTU-CVE-2025-40106"],"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 cause a kernel panic via divide-by-zero in the comedi driver by submitting a command with a zero channel list length.","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\ncomedi: fix divide-by-zero in comedi_buf_munge()\n\nThe comedi_buf_munge() function performs a modulo operation\n`async-\u003emunge_chan %= async-\u003ecmd.chanlist_len` without first\nchecking if chanlist_len is zero. If a user program submits a command with\nchanlist_len set to zero, this causes a divide-by-zero error when the device\nprocesses data in the interrupt handler path.\n\nAdd a check for zero chanlist_len at the beginning of the\nfunction, similar to the existing checks for !map and\nCMDF_RAWDATA flag. When chanlist_len is zero, update\nmunge_count and return early, indicating the data was\nhandled without munging.\n\nThis prevents potential kernel panics from malformed user commands.","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":"comedi: fix divide-by-zero in comedi_buf_munge()","id":"CVE-2025-40106","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"denial_of_service","year":"2025"},"n_packages":0,"n_references":8,"next":{"headline":"can: hi311x: fix null pointer dereference when resuming from sleep before interface was enabled","id":"CVE-2025-40107"},"packages":[],"prev":{"headline":"vfs: Don't leak disconnected dentries on umount","id":"CVE-2025-40105"},"products":["Linux"],"published":"2025-10-31","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 cause a kernel panic via divide-by-zero in the comedi driver by submitting a command with a zero channel list length.","url":"https://insights.sbomify.com/CVE-2025-40106/"}