{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-90336 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-90336 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-2026-90336 and fix it if it is affected.\n\nWhat it is: CVE-2026-90336 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-2026-90336 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-2026-90336/ (Markdown: https://insights.sbomify.com/CVE-2026-90336/index.md)","id":"CVE-2026-90336","markdown":"https://insights.sbomify.com/CVE-2026-90336/index.md","name":"CVE-2026-90336","record":{"aliases":["AZL-102156","BELL-CVE-2026-90336","DEBIAN-CVE-2026-90336","GHSA-wphw-rfmf-7hpg","UBUNTU-CVE-2026-90336"],"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 serial driver","requires_auth":"none","summary":"A use-after-free vulnerability in the Linux kernel serial core allows local attackers to potentially execute code or escalate privileges via failed driver registration.","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\nserial: core: clear freed pointers on uart_register_driver() failure\n\nuart_register_driver() leaves drv-\u003estate pointing to freed memory when\ntty_alloc_driver() fails. If tty_register_driver() fails, drv-\u003etty_driver\nalso retains a pointer after its reference is dropped.\n\nDrivers that use drv-\u003estate as an \"already registered\" flag can then skip\nregistration on the next probe and pass the freed state to\nuart_add_one_port().\n\nThis issue was found with failslab on QEMU's raspi1ap board by\nfailing registration and binding the PL011 port again.\n\nClear both pointers on their failure paths, as uart_unregister_driver()\nalready does.","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":"serial: core: clear freed pointers on uart_register_driver() failure","id":"CVE-2026-90336","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":"serial: core: do fallible allocations before the console can be registered","id":"CVE-2026-90337"},"packages":[],"prev":{"headline":"tty: skip cdev_del() when no cdev is registered","id":"CVE-2026-90335"},"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 serial core allows local attackers to potentially execute code or escalate privileges via failed driver registration.","url":"https://insights.sbomify.com/CVE-2026-90336/"}