{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-98720 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-98720 is a 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-2026-98720 and fix it if it is affected.\n\nWhat it is: CVE-2026-98720 is a 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-2026-98720 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-2026-98720/ (Markdown: https://insights.sbomify.com/CVE-2026-98720/index.md)","id":"CVE-2026-98720","markdown":"https://insights.sbomify.com/CVE-2026-98720/index.md","name":"CVE-2026-98720","record":{"aliases":["AZL-109266","BELL-CVE-2026-98720","DEBIAN-CVE-2026-98720","GHSA-6822-57w6-j97m","UBUNTU-CVE-2026-98720"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["data_read","privilege_escalation"],"network_reachable":"adjacent_or_local","non_default_config":true,"product_category":"Linux kernel KVM","requires_auth":"low_privilege","summary":"A guest VM can read or write the host's Task Priority Register due to a missing MSR bitmap refresh, potentially leading to information disclosure or privilege escalation.","user_interaction":"not_required","vuln_class":"information_disclosure"},"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: Force MSR bitmap refresh if runtime eVMCS controls are modified\n\nForce a refresh of the vmcs02 MSR bitmap during nested VM-Enter if the\nruntime eVMCS controls (pin, primary, secondary, etc.) are being updated.\nIf L1 isn't intercepting TPR writes, runs L2 with TPR virtualization, and\nthen runs the same L2 with TPR virtualization disabled, KVM will fail to\nrefresh msr_bitmap02 and leave TPR in passthrough mode even though TPR\nvirtualization is disabled.  I.e. failure to refresh the bitmap lets L2 (or\nL1 by proxy) read and write L0's TPR.","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: Force MSR bitmap refresh if runtime eVMCS controls are modified","id":"CVE-2026-98720","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"information_disclosure","year":"2026"},"n_packages":0,"n_references":4,"next":{"headline":"mtd: rawnand: cadence: Initialize IRQ state before requesting IRQ","id":"CVE-2026-98721"},"packages":[],"prev":{"headline":"KVM: SEV: Nullify \"have run CPUs\" mask pointer when freeing it","id":"CVE-2026-98719"},"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 guest VM can read or write the host's Task Priority Register due to a missing MSR bitmap refresh, potentially leading to information disclosure or privilege escalation.","url":"https://insights.sbomify.com/CVE-2026-98720/"}