{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-89959 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-89959 is a high-severity vulnerability in Linux, published on 16 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-2026-89959 and fix it if it is affected.\n\nWhat it is: CVE-2026-89959 is a high-severity vulnerability in Linux, published on 16 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-2026-89959 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-2026-89959/ (Markdown: https://insights.sbomify.com/CVE-2026-89959/index.md)","id":"CVE-2026-89959","markdown":"https://insights.sbomify.com/CVE-2026-89959/index.md","name":"CVE-2026-89959","record":{"aliases":["AZL-101180","BELL-CVE-2026-89959","DEBIAN-CVE-2026-89959","GHSA-8mfq-hrvh-mwqh","UBUNTU-CVE-2026-89959"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["other"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel s390","requires_auth":"low_privilege","summary":"Incorrect bitmap operation in the Linux kernel s390 vfio-ap driver prevents proper removal of control domains from KVM guests.","user_interaction":"not_required","vuln_class":"other"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Linux","cpe":[],"cvss":{"score":8.8,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","version":"3.1"},"cwes":[],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\ns390/vfio-ap: Fix control domain removal in vfio_ap_mdev_cfg_remove\n\nThe vfio_ap_config_remove function uses the bitmap_andnot function to clear\nbits from the matrix_mdev-\u003ematrix.adm bitmap (specifies the control domains\nassigned to the mdev). This prevents the explicitly unplugged control\ndomains from being removed the KVM guest. The bitmap_and function is used\ninstead.","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":"s390/vfio-ap: Fix control domain removal in vfio_ap_mdev_cfg_remove","id":"CVE-2026-89959","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"other","year":"2026"},"n_packages":0,"n_references":6,"next":{"headline":"s390/vfio-ap: fix stale pqap_hook pointer on error in vfio_ap_mdev_set_kvm()","id":"CVE-2026-89960"},"packages":[],"prev":{"headline":"s390/vfio-ap: Fix dereference matrix_mdev-\u003ekvm without checking for NULL","id":"CVE-2026-89958"},"products":["Linux"],"published":"2026-09-16","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":"2026-10-19","vendors":["Linux"]},"summary":"Incorrect bitmap operation in the Linux kernel s390 vfio-ap driver prevents proper removal of control domains from KVM guests.","url":"https://insights.sbomify.com/CVE-2026-89959/"}