{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2023-53751 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2023-53751 is a critical use after free vulnerability in Linux, published on 8 Dec 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-2023-53751 and fix it if it is affected.\n\nWhat it is: CVE-2023-53751 is a critical use after free vulnerability in Linux, published on 8 Dec 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-2023-53751 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-2023-53751/ (Markdown: https://insights.sbomify.com/CVE-2023-53751/index.md)","id":"CVE-2023-53751","markdown":"https://insights.sbomify.com/CVE-2023-53751/index.md","name":"CVE-2023-53751","record":{"aliases":["BELL-CVE-2023-53751","DEBIAN-CVE-2023-53751","GHSA-7gp2-6wc7-fw9f","ROOT-OS-DEBIAN-11-CVE-2023-53751","ROOT-OS-UBUNTU-2204-CVE-2023-53751","UBUNTU-CVE-2023-53751"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["code_execution","denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Linux kernel CIFS","requires_auth":"none","summary":"A use-after-free vulnerability in the Linux kernel CIFS module allows attackers to potentially execute code or cause a denial of service.","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\ncifs: fix potential use-after-free bugs in TCP_Server_Info::hostname\n\nTCP_Server_Info::hostname may be updated once or many times during\nreconnect, so protect its access outside reconnect path as well and\nthen prevent any potential use-after-free bugs.","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":"cifs: fix potential use-after-free bugs in TCP_Server_Info::hostname","id":"CVE-2023-53751","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"use_after_free","year":"2023"},"n_packages":0,"n_references":4,"next":{"headline":"net: deal with integer overflows in kmalloc_reserve()","id":"CVE-2023-53752"},"packages":[],"prev":{"headline":"pinctrl: freescale: Fix a memory out of bounds when num_configs is 1","id":"CVE-2023-53750"},"products":["Linux"],"published":"2025-12-08","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":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2026-08-05","vendors":["Linux"]},"summary":"A use-after-free vulnerability in the Linux kernel CIFS module allows attackers to potentially execute code or cause a denial of service.","url":"https://insights.sbomify.com/CVE-2023-53751/"}