{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-98472 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-98472 is an use after free vulnerability in Linux, published on 18 Oct 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-2026-98472 and fix it if it is affected.\n\nWhat it is: CVE-2026-98472 is an use after free vulnerability in Linux, published on 18 Oct 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-2026-98472 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-2026-98472/ (Markdown: https://insights.sbomify.com/CVE-2026-98472/index.md)","id":"CVE-2026-98472","markdown":"https://insights.sbomify.com/CVE-2026-98472/index.md","name":"CVE-2026-98472","record":{"aliases":["BELL-CVE-2026-98472","DEBIAN-CVE-2026-98472","GHSA-qccv-gmm4-2g2g","UBUNTU-CVE-2026-98472"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["privilege_escalation","denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":true,"product_category":"Linux kernel KVM","requires_auth":"high_privilege","summary":"A use-after-free vulnerability in Linux KVM SEV allows local attackers with high privileges to cause denial of service or escalate privileges.","user_interaction":"not_required","vuln_class":"use_after_free"},"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\nKVM: SEV: Free have_run_cpus during VM destruction even if VM is no longer SEV\n\nUnconditionally free SEV's \"have run CPUs\" cpumask in the VM destroy path,\ni.e. even for what appear to be non-SEV VMs, as an SEV VM becomes a non-SEV\nVM if its state is intra-host migrated.  Alternatively, the mask could be\nfreed in sev_migrate_from() when \"converting\" the source VM, but that gets\nannoying because ideally KVM would nullify the mask to guard against UAF,\nand nullifying the mask would need be conditioned on CPUMASK_OFFSTACK=y.\n\nFreeing the mask during sev_migrate_from() is also not robust against other\nKVM bugs, though that's kind of a moot point since any such bugs would show\nup even if sev-\u003eactive is never set.  I.e. KVM must get that side of things\ncorrect.  But, that's not a great reason to add more code just to make\nthings marginally less robust.","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":"KVM: SEV: Free have_run_cpus during VM destruction even if VM is no longer SEV","id":"CVE-2026-98472","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":"s390/vfio-ap: fix KVM GISC and page leak when queue removed from host config","id":"CVE-2026-98473"},"packages":[],"prev":{"headline":"KVM: SEV: Do cache maintenance on the source VM during intra-host migration","id":"CVE-2026-98471"},"products":["Linux"],"published":"2026-10-18","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":"2026-10-19","vendors":["Linux"]},"summary":"A use-after-free vulnerability in Linux KVM SEV allows local attackers with high privileges to cause denial of service or escalate privileges.","url":"https://insights.sbomify.com/CVE-2026-98472/"}