{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-80753 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-80753 is a high-severity use after free vulnerability in Linux, published on 3 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-2026-80753 and fix it if it is affected.\n\nWhat it is: CVE-2026-80753 is a high-severity use after free vulnerability in Linux, published on 3 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-2026-80753 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-2026-80753/ (Markdown: https://insights.sbomify.com/CVE-2026-80753/index.md)","id":"CVE-2026-80753","markdown":"https://insights.sbomify.com/CVE-2026-80753/index.md","name":"CVE-2026-80753","record":{"aliases":["BELL-CVE-2026-80753","DEBIAN-CVE-2026-80753","GHSA-v4xm-q8j7-q9wj","UBUNTU-CVE-2026-80753"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["code_execution","denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel module","requires_auth":"none","summary":"A use-after-free vulnerability in the Linux kernel ovpn module allows attackers to execute arbitrary code or cause a denial of service via race conditions during module unloading.","user_interaction":"not_required","vuln_class":"use_after_free"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Linux","cpe":[],"cvss":{"score":8.4,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\novpn: run deferred work on a module-owned workqueue\n\novpn queues several work items whose callbacks execute module text.\nThese works currently run on the global system workqueues, so module\nexit has no driver-owned drain point that guarantees the callbacks have\nfully returned before the module text can be freed.\n\nObject references protect the objects used by the callbacks, but they do\nnot prove that a workqueue function has returned. In particular, a\nworker can drop the final reference that unblocks device teardown while\nit is still executing ovpn code.\n\nAdd a module-owned workqueue and queue all ovpn work items on it. During\nmodule exit, unregister rtnl and netlink first, flush the workqueue so\nordinary ovpn workers finish, run the final RCU barrier, and destroy the\nworkqueue last. This keeps the workqueue available for cleanup work\nqueued from RCU callbacks, while ensuring no ovpn work item can outlive\nthe module text.\n\nThe per-device delayed keepalive work remains explicitly disabled during\nnetdev teardown (disable_delayed_work_sync in ndo_uninit), since\nflush_workqueue does not flush delayed work that is still only pending\non its timer.","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":"ovpn: run deferred work on a module-owned workqueue","id":"CVE-2026-80753","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"use_after_free","year":"2026"},"n_packages":0,"n_references":3,"next":{"headline":"Input: synaptics-rmi4 - fix F55 transmitter electrode count typo","id":"CVE-2026-80754"},"packages":[],"prev":{"headline":"Input: psxpad-spi - set driver data before use","id":"CVE-2026-80752"},"products":["Linux"],"published":"2026-09-03","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":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2026-09-07","vendors":["Linux"]},"summary":"A use-after-free vulnerability in the Linux kernel ovpn module allows attackers to execute arbitrary code or cause a denial of service via race conditions during module unloading.","url":"https://insights.sbomify.com/CVE-2026-80753/"}