{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2025-40187 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2025-40187 is a high-severity vulnerability in Linux, published on 12 Nov 2025. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2025-40187 and fix it if it is affected.\n\nWhat it is: CVE-2025-40187 is a high-severity vulnerability in Linux, published on 12 Nov 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2025-40187 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-2025-40187/ (Markdown: https://insights.sbomify.com/CVE-2025-40187/index.md)","id":"CVE-2025-40187","markdown":"https://insights.sbomify.com/CVE-2025-40187/index.md","name":"CVE-2025-40187","record":{"aliases":["AZL-70079","BELL-CVE-2025-40187","DEBIAN-CVE-2025-40187","GHSA-xp33-mgvv-9242","ROOT-OS-DEBIAN-11-CVE-2025-40187","ROOT-OS-DEBIAN-13-CVE-2025-40187","ROOT-OS-UBUNTU-2404-CVE-2025-40187","UBUNTU-CVE-2025-40187"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Linux kernel","requires_auth":"none","summary":"A null pointer dereference in the Linux kernel SCTP implementation allows attackers to cause a denial of service.","user_interaction":"not_required","vuln_class":"null_dereference"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Linux","cpe":[],"cvss":{"score":7.5,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet/sctp: fix a null dereference in sctp_disposition sctp_sf_do_5_1D_ce()\n\nIf new_asoc-\u003epeer.adaptation_ind=0 and sctp_ulpevent_make_authkey=0\nand sctp_ulpevent_make_authkey() returns 0, then the variable\nai_ev remains zero and the zero will be dereferenced\nin the sctp_ulpevent_free() function.","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":"net/sctp: fix a null dereference in sctp_disposition sctp_sf_do_5_1D_ce()","id":"CVE-2025-40187","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"null_dereference","year":"2025"},"n_packages":0,"n_references":8,"next":{"headline":"pwm: berlin: Fix wrong register in suspend/resume","id":"CVE-2025-40188"},"packages":[],"prev":{"headline":"tcp: Don't call reqsk_fastopen_remove() in tcp_conn_request().","id":"CVE-2025-40186"},"products":["Linux"],"published":"2025-11-12","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-10-15","vendors":["Linux"]},"summary":"A null pointer dereference in the Linux kernel SCTP implementation allows attackers to cause a denial of service.","url":"https://insights.sbomify.com/CVE-2025-40187/"}