{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-90421 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-90421 is an use after free vulnerability in Linux, published on 17 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-2026-90421 and fix it if it is affected.\n\nWhat it is: CVE-2026-90421 is an use after free vulnerability in Linux, published on 17 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-2026-90421 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-2026-90421/ (Markdown: https://insights.sbomify.com/CVE-2026-90421/index.md)","id":"CVE-2026-90421","markdown":"https://insights.sbomify.com/CVE-2026-90421/index.md","name":"CVE-2026-90421","record":{"aliases":["AZL-102858","BELL-CVE-2026-90421","DEBIAN-CVE-2026-90421","GHSA-286w-pmvg-5rp9","UBUNTU-CVE-2026-90421"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["code_execution","privilege_escalation"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel","requires_auth":"none","summary":"A use-after-free vulnerability in the Linux kernel PCI subsystem allows local attackers to execute arbitrary code or escalate privileges during concurrent probe and ID removal operations.","user_interaction":"not_required","vuln_class":"use_after_free"},"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\nPCI: Fix UAF when probe runs concurrent to dyn ID removal\n\nDynamic IDs are only guaranteed to be valid when dynids.lock is held,\nas remove_id_store() can free the node. Thus, make a copy in\npci_match_device(). Also, clarify that the id parameter is only valid\nduring probe.","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":"PCI: Fix UAF when probe runs concurrent to dyn ID removal","id":"CVE-2026-90421","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"use_after_free","year":"2026"},"n_packages":0,"n_references":5,"next":{"headline":"clk: mediatek: pllfh: Fix IO remapping leak in register_pllfhs error path","id":"CVE-2026-90422"},"packages":[],"prev":{"headline":"nilfs2: fix infinite loop in nilfs_clean_segments()","id":"CVE-2026-90420"},"products":["Linux"],"published":"2026-09-17","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 use-after-free vulnerability in the Linux kernel PCI subsystem allows local attackers to execute arbitrary code or escalate privileges during concurrent probe and ID removal operations.","url":"https://insights.sbomify.com/CVE-2026-90421/"}