{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-89636 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-89636 is a critical use after free vulnerability in Linux, published on 11 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-89636 and fix it if it is affected.\n\nWhat it is: CVE-2026-89636 is a critical use after free vulnerability in Linux, published on 11 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-89636 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-2026-89636/ (Markdown: https://insights.sbomify.com/CVE-2026-89636/index.md)","id":"CVE-2026-89636","markdown":"https://insights.sbomify.com/CVE-2026-89636/index.md","name":"CVE-2026-89636","record":{"aliases":["AZL-100472","BELL-CVE-2026-89636","DEBIAN-CVE-2026-89636","GHSA-4452-h45j-w5mp","UBUNTU-CVE-2026-89636"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["code_execution","privilege_escalation"],"network_reachable":"yes","non_default_config":false,"product_category":"Linux kernel SMB client","requires_auth":"none","summary":"A use-after-free vulnerability in the Linux kernel SMB client allows attackers to potentially execute code or escalate privileges.","user_interaction":"not_required","vuln_class":"use_after_free"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Linux","cpe":[],"cvss":{"score":9.8,"severity":"critical","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: clear ce-\u003etgthint in free_tgts()\n\nWhen free_tgts() frees all structures in ce-\u003etlist, ce-\u003etgthint\nis left pointing to one of the freed cache_dfs_tgt structures.\n\nIf ce-\u003etgthint is not reset before it is used later, it results\nin a use-after-free.\n\nSet ce-\u003etgthint to NULL in free_tgts() after the elements are\nfreed to reflect that no elements remain.","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":"smb: client: clear ce-\u003etgthint in free_tgts()","id":"CVE-2026-89636","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"use_after_free","year":"2026"},"n_packages":0,"n_references":6,"next":{"headline":"smb: client: fix UAF and buffer leak in cifs_check_trans2() for malformed secondary T2","id":"CVE-2026-89637"},"packages":[],"prev":{"headline":"ksmbd: only rebind the reopened file's own oplock on durable reconnect","id":"CVE-2026-89635"},"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":"yes","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-10-19","vendors":["Linux"]},"summary":"A use-after-free vulnerability in the Linux kernel SMB client allows attackers to potentially execute code or escalate privileges.","url":"https://insights.sbomify.com/CVE-2026-89636/"}