{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2025-40328 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2025-40328 is a high-severity use after free vulnerability in Linux, published on 9 Dec 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2025-40328 and fix it if it is affected.\n\nWhat it is: CVE-2025-40328 is a high-severity use after free vulnerability in Linux, published on 9 Dec 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2025-40328 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-2025-40328/ (Markdown: https://insights.sbomify.com/CVE-2025-40328/index.md)","id":"CVE-2025-40328","markdown":"https://insights.sbomify.com/CVE-2025-40328/index.md","name":"CVE-2025-40328","record":{"aliases":["BELL-CVE-2025-40328","DEBIAN-CVE-2025-40328","GHSA-f255-x52r-mjq5","ROOT-OS-DEBIAN-12-CVE-2025-40328","ROOT-OS-DEBIAN-13-CVE-2025-40328","ROOT-OS-UBUNTU-2404-CVE-2025-40328","UBUNTU-CVE-2025-40328"],"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 via race conditions.","user_interaction":"required","vuln_class":"use_after_free"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Linux","cpe":[],"cvss":{"score":8.8,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/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: fix potential UAF in smb2_close_cached_fid()\n\nfind_or_create_cached_dir() could grab a new reference after kref_put()\nhad seen the refcount drop to zero but before cfid_list_lock is acquired\nin smb2_close_cached_fid(), leading to use-after-free.\n\nSwitch to kref_put_lock() so cfid_release() is called with\ncfid_list_lock held, closing that gap.","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: fix potential UAF in smb2_close_cached_fid()","id":"CVE-2025-40328","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"use_after_free","year":"2025"},"n_packages":0,"n_references":4,"next":{"headline":"drm/sched: Fix deadlock in drm_sched_entity_kill_jobs_cb","id":"CVE-2025-40329"},"packages":[],"prev":{"headline":"perf/core: Fix system hang caused by cpu-clock usage","id":"CVE-2025-40327"},"products":["Linux"],"published":"2025-12-09","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":"2026-10-15","vendors":["Linux"]},"summary":"A use-after-free vulnerability in the Linux kernel SMB client allows attackers to potentially execute code or escalate privileges via race conditions.","url":"https://insights.sbomify.com/CVE-2025-40328/"}