{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2025-40176 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2025-40176 is a critical use after free vulnerability in Linux, published on 12 Nov 2025. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2025-40176 and fix it if it is affected.\n\nWhat it is: CVE-2025-40176 is a critical use after free vulnerability in Linux, published on 12 Nov 2025. 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-2025-40176 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-2025-40176/ (Markdown: https://insights.sbomify.com/CVE-2025-40176/index.md)","id":"CVE-2025-40176","markdown":"https://insights.sbomify.com/CVE-2025-40176/index.md","name":"CVE-2025-40176","record":{"aliases":["AZL-70028","BELL-CVE-2025-40176","DEBIAN-CVE-2025-40176","GHSA-79rw-jwgh-qv55","ROOT-OS-DEBIAN-13-CVE-2025-40176","ROOT-OS-UBUNTU-2404-CVE-2025-40176","UBUNTU-CVE-2025-40176"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["code_execution","privilege_escalation"],"network_reachable":"yes","non_default_config":false,"product_category":"Linux kernel TLS","requires_auth":"none","summary":"A use-after-free vulnerability in the Linux kernel TLS subsystem allows attackers to execute arbitrary code or escalate privileges via async decryption failures.","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\ntls: wait for pending async decryptions if tls_strp_msg_hold fails\n\nAsync decryption calls tls_strp_msg_hold to create a clone of the\ninput skb to hold references to the memory it uses. If we fail to\nallocate that clone, proceeding with async decryption can lead to\nvarious issues (UAF on the skb, writing into userspace memory after\nthe recv() call has returned).\n\nIn this case, wait for all pending decryption requests.","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":"tls: wait for pending async decryptions if tls_strp_msg_hold fails","id":"CVE-2025-40176","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"use_after_free","year":"2025"},"n_packages":0,"n_references":5,"next":{"headline":"accel/qaic: Fix bootlog initialization ordering","id":"CVE-2025-40177"},"packages":[],"prev":{"headline":"idpf: cleanup remaining SKBs in PTP flows","id":"CVE-2025-40175"},"products":["Linux"],"published":"2025-11-12","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":"2026-10-15","vendors":["Linux"]},"summary":"A use-after-free vulnerability in the Linux kernel TLS subsystem allows attackers to execute arbitrary code or escalate privileges via async decryption failures.","url":"https://insights.sbomify.com/CVE-2025-40176/"}