{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2025-40071 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2025-40071 is a denial of service 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-2025-40071 and fix it if it is affected.\n\nWhat it is: CVE-2025-40071 is a denial of service 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-2025-40071 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-2025-40071/ (Markdown: https://insights.sbomify.com/CVE-2025-40071/index.md)","id":"CVE-2025-40071","markdown":"https://insights.sbomify.com/CVE-2025-40071/index.md","name":"CVE-2025-40071","record":{"aliases":["AZL-68942","BELL-CVE-2025-40071","DEBIAN-CVE-2025-40071","GHSA-xj3g-qjx7-6cfm","ROOT-OS-DEBIAN-12-CVE-2025-40071","ROOT-OS-DEBIAN-13-CVE-2025-40071","ROOT-OS-UBUNTU-2204-CVE-2025-40071","ROOT-OS-UBUNTU-2404-CVE-2025-40071","UBUNTU-CVE-2025-40071"],"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":"none","summary":"A local attacker can cause a denial of service in the Linux kernel by blocking the input queue during GSM modem status updates.","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\ntty: n_gsm: Don't block input queue by waiting MSC\n\nCurrently gsm_queue() processes incoming frames and when opening\na DLC channel it calls gsm_dlci_open() which calls gsm_modem_update().\nIf basic mode is used it calls gsm_modem_upd_via_msc() and it\ncannot block the input queue by waiting the response to come\ninto the same input queue.\n\nInstead allow sending Modem Status Command without waiting for remote\nend to respond. Define a new function gsm_modem_send_initial_msc()\nfor this purpose. As MSC is only valid for basic encoding, it does\nnot do anything for advanced or when convergence layer type 2 is used.","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":"tty: n_gsm: Don't block input queue by waiting MSC","id":"CVE-2025-40071","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"denial_of_service","year":"2025"},"n_packages":0,"n_references":4,"next":{"headline":"fanotify: Validate the return value of mnt_ns_from_dentry() before dereferencing","id":"CVE-2025-40072"},"packages":[],"prev":{"headline":"pps: fix warning in pps_register_cdev when register device fail","id":"CVE-2025-40070"},"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":"2026-05-23","vendors":["Linux"]},"summary":"A local attacker can cause a denial of service in the Linux kernel by blocking the input queue during GSM modem status updates.","url":"https://insights.sbomify.com/CVE-2025-40071/"}