{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-89911 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-89911 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-2026-89911 and fix it if it is affected.\n\nWhat it is: CVE-2026-89911 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-2026-89911 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-2026-89911/ (Markdown: https://insights.sbomify.com/CVE-2026-89911/index.md)","id":"CVE-2026-89911","markdown":"https://insights.sbomify.com/CVE-2026-89911/index.md","name":"CVE-2026-89911","record":{"aliases":["BELL-CVE-2026-89911","DEBIAN-CVE-2026-89911","GHSA-jq85-p2x4-26cc","UBUNTU-CVE-2026-89911"],"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 guest VM can trigger an integer overflow in KVM arm64 TLB invalidation, potentially causing a denial of service.","user_interaction":"not_required","vuln_class":"integer_overflow"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Linux","cpe":[],"cvss":{"score":7.9,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:H","version":"3.1"},"cwes":[],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: arm64: Correctly cap TLBI Range to the architural limit\n\nTLB Invalidation by Range has a fairly powerful way of encoding pretty\nlarge ranges in a small number of bits. This range can be based on an\narbitrary VA, which means it is pretty easy for a guest to generate an\noverflow should the hypervisor be naive enough to add the range to the\nbase...\n\nMake sure the range is capped to the limit dictated by the address bit\nthat determines the VA range. For an IPA invalidation, this is further\ncorrected down the line to ignore the upper range.","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: arm64: Correctly cap TLBI Range to the architural limit","id":"CVE-2026-89911","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"integer_overflow","year":"2026"},"n_packages":0,"n_references":3,"next":{"headline":"KVM: arm64: vgic-its: Don't dereference a NULL collection on ITT save","id":"CVE-2026-89912"},"packages":[],"prev":{"headline":"LoongArch: KVM: Fix uninitialized stack variable issue with dmsintc","id":"CVE-2026-89910"},"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":"A guest VM can trigger an integer overflow in KVM arm64 TLB invalidation, potentially causing a denial of service.","url":"https://insights.sbomify.com/CVE-2026-89911/"}