{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-80996 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-80996 is a denial of service vulnerability in Linux, published on 11 Sep 2026. 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-2026-80996 and fix it if it is affected.\n\nWhat it is: CVE-2026-80996 is a denial of service vulnerability in Linux, published on 11 Sep 2026. 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-2026-80996 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-2026-80996/ (Markdown: https://insights.sbomify.com/CVE-2026-80996/index.md)","id":"CVE-2026-80996","markdown":"https://insights.sbomify.com/CVE-2026-80996/index.md","name":"CVE-2026-80996","record":{"aliases":["AZL-100832","BELL-CVE-2026-80996","DEBIAN-CVE-2026-80996","GHSA-hc5w-42jx-9cr6","UBUNTU-CVE-2026-80996"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel L2TP","requires_auth":"low_privilege","summary":"An attacker with local access can cause resource exhaustion in the Linux kernel L2TP module by triggering repeated operations that fail due to notification errors.","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\nnet: l2tp: do not propagate multicast notification errors\n\nThe tunnel create, tunnel modify, session create, and session modify\nnetlink handlers send multicast notifications through helpers that can fail\nwhile allocating or encoding a message, or while multicasting it.\n\nFor tunnel and session create/modify, a notification is sent after the live\noperation has completed. Returning a best-effort notification error as the\ncommand result can therefore report failure for an operation that already\ncommitted and can cause callers to retry and accumulate live objects.\n\nKeep sending notifications for listener visibility, but do not propagate\ntheir best-effort status as the command result. This also keeps the tunnel\nmodify command consistent with the other notification-only paths.","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: l2tp: do not propagate multicast notification errors","id":"CVE-2026-80996","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":0,"n_references":5,"next":{"headline":"net: ipa: fix stalled modem TX queue after runtime resume","id":"CVE-2026-80997"},"packages":[],"prev":{"headline":"net: mctp: hold a reference to the route device in mctp_route_lookup()","id":"CVE-2026-80995"},"products":["Linux"],"published":"2026-09-11","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":"2026-10-21","vendors":["Linux"]},"summary":"An attacker with local access can cause resource exhaustion in the Linux kernel L2TP module by triggering repeated operations that fail due to notification errors.","url":"https://insights.sbomify.com/CVE-2026-80996/"}