{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-89931 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-89931 is a 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-2026-89931 and fix it if it is affected.\n\nWhat it is: CVE-2026-89931 is a 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-2026-89931 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-2026-89931/ (Markdown: https://insights.sbomify.com/CVE-2026-89931/index.md)","id":"CVE-2026-89931","markdown":"https://insights.sbomify.com/CVE-2026-89931/index.md","name":"CVE-2026-89931","record":{"aliases":["BELL-CVE-2026-89931","DEBIAN-CVE-2026-89931","GHSA-9jg7-wvq2-32v3","UBUNTU-CVE-2026-89931"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel KVM","requires_auth":"low_privilege","summary":"A flaw in Linux KVM nested virtualization allows a local attacker to cause a denial of service by triggering double-mapping of VMCS pages.","user_interaction":"not_required","vuln_class":"other"},"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: nVMX: Ensure KVM_REQ_GET_NESTED_STATE_PAGES is cleared on VM-Exit\n\nAlways check and clear KVM_REQ_GET_NESTED_STATE_PAGES when emulating a\nnested VM-Exit to ensure the request is cleared, even when KVM was built\nwith CONFIG_KVM_HYPERV=n, as KVM subtly relies on the \"check\" to clear\nthe flag and thus avoid double-mapping the vmcs12 pages, e.g. if KVM\nmanages to bail from VM-Enter without processing the request, and then\nemulates VMLAUNCH or VMRESUME.","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: nVMX: Ensure KVM_REQ_GET_NESTED_STATE_PAGES is cleared on VM-Exit","id":"CVE-2026-89931","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"other","year":"2026"},"n_packages":0,"n_references":4,"next":{"headline":"KVM: nVMX: Always flush vpid02 on first use","id":"CVE-2026-89932"},"packages":[],"prev":{"headline":"KVM: nVMX: Service local TLB flushes on failed nested VM-Enter","id":"CVE-2026-89930"},"products":["Linux"],"published":"2026-09-16","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 flaw in Linux KVM nested virtualization allows a local attacker to cause a denial of service by triggering double-mapping of VMCS pages.","url":"https://insights.sbomify.com/CVE-2026-89931/"}