{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-89451 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-89451 is a 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-2026-89451 and fix it if it is affected.\n\nWhat it is: CVE-2026-89451 is a 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-2026-89451 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-2026-89451/ (Markdown: https://insights.sbomify.com/CVE-2026-89451/index.md)","id":"CVE-2026-89451","markdown":"https://insights.sbomify.com/CVE-2026-89451/index.md","name":"CVE-2026-89451","record":{"aliases":["AZL-100277","BELL-CVE-2026-89451","DEBIAN-CVE-2026-89451","GHSA-mm8r-pp22-xwxg","UBUNTU-CVE-2026-89451"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel","requires_auth":"low_privilege","summary":"A race condition in the Linux kernel IOMMU SVA subsystem allows a local attacker to trigger a null pointer dereference, causing a system crash.","user_interaction":"not_required","vuln_class":"race_condition"},"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\niommu/sva: Set handle-\u003edev before the SVA handle is visible\n\niommu_attach_device_pasid() installs the new SVA attach handle in the\ngroup PASID lookup before iommu_sva_bind_device() returns. A concurrent\nbind can therefore find and reuse the same handle after iommu_sva_lock is\ndropped.\n\nhandle-\u003edev was initialized after dropping iommu_sva_lock. This leaves a\nwindow where a racing bind can return a handle whose dev pointer is still\nNULL. A subsequent iommu_sva_unbind_device() can then dereference it via\nhandle-\u003edev-\u003eiommu_group.\n\nInitialize handle-\u003edev before releasing iommu_sva_lock so any visible SVA\nhandle is fully initialized.","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/sva: Set handle-\u003edev before the SVA handle is visible","id":"CVE-2026-89451","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"race_condition","year":"2026"},"n_packages":0,"n_references":5,"next":{"headline":"iommu/msm: Unwind probe state on registration failure","id":"CVE-2026-89452"},"packages":[],"prev":{"headline":"iommu/tegra241-cmdqv: Reject a vSID wider than the SID_MATCH field","id":"CVE-2026-89450"},"products":["Linux"],"published":"2026-09-11","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":"2026-10-21","vendors":["Linux"]},"summary":"A race condition in the Linux kernel IOMMU SVA subsystem allows a local attacker to trigger a null pointer dereference, causing a system crash.","url":"https://insights.sbomify.com/CVE-2026-89451/"}