{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-89448 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-89448 is a critical vulnerability in Linux, published on 11 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-2026-89448 and fix it if it is affected.\n\nWhat it is: CVE-2026-89448 is a critical vulnerability in Linux, published on 11 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-2026-89448 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-2026-89448/ (Markdown: https://insights.sbomify.com/CVE-2026-89448/index.md)","id":"CVE-2026-89448","markdown":"https://insights.sbomify.com/CVE-2026-89448/index.md","name":"CVE-2026-89448","record":{"aliases":["AZL-100874","BELL-CVE-2026-89448","DEBIAN-CVE-2026-89448","GHSA-mhhr-wjj6-vjmr","UBUNTU-CVE-2026-89448"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["security_bypass"],"network_reachable":"adjacent_or_local","non_default_config":true,"product_category":"Linux kernel","requires_auth":"none","summary":"Attackers may bypass IOMMU isolation when tboot is enabled if ACS is disabled, requiring a kernel patch to enforce correct configuration.","user_interaction":"not_required","vuln_class":"misconfiguration"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Linux","cpe":[],"cvss":{"score":9.3,"severity":"critical","source":"cna","vector":"CVSS:3.1/AV:L/AC:L/PR:N/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\niommu/vt-d: Force requesting ACS when tboot is enabled\n\nCurrently the conditions of requesting ACS in detect_intel_iommu()\ndon't include tboot, leading to a possible misconfiguration with ACS\ndisabled (e.g. due to user opts) while iommu is later forced on by\ntboot_force_iommu().\n\nFix it by checking tboot in detect_intel_iommu().","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":"iommu/vt-d: Force requesting ACS when tboot is enabled","id":"CVE-2026-89448","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"misconfiguration","year":"2026"},"n_packages":0,"n_references":5,"next":{"headline":"iommu: Fix dev_iommu memory leak when device_add fails in iommu_mock_device_add","id":"CVE-2026-89449"},"packages":[],"prev":{"headline":"iommufd: Avoid locking internal accesses during unmap","id":"CVE-2026-89447"},"products":["Linux"],"published":"2026-09-11","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":"no","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-10-19","vendors":["Linux"]},"summary":"Attackers may bypass IOMMU isolation when tboot is enabled if ACS is disabled, requiring a kernel patch to enforce correct configuration.","url":"https://insights.sbomify.com/CVE-2026-89448/"}