{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2023-53840 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2023-53840 is a memory corruption vulnerability in Linux, published on 9 Dec 2025. 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-2023-53840 and fix it if it is affected.\n\nWhat it is: CVE-2023-53840 is a memory corruption vulnerability in Linux, published on 9 Dec 2025. 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-2023-53840 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-2023-53840/ (Markdown: https://insights.sbomify.com/CVE-2023-53840/index.md)","id":"CVE-2023-53840","markdown":"https://insights.sbomify.com/CVE-2023-53840/index.md","name":"CVE-2023-53840","record":{"aliases":["BELL-CVE-2023-53840","DEBIAN-CVE-2023-53840","GHSA-x48h-3p3j-rpqg","ROOT-OS-DEBIAN-11-CVE-2023-53840","UBUNTU-CVE-2023-53840"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["denial_of_service","code_execution"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel","requires_auth":"none","summary":"A missing null terminator in the Linux kernel xhci-dbc driver can cause out-of-bounds memory access, potentially leading to crashes or code execution.","user_interaction":"not_required","vuln_class":"memory_corruption"},"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\nusb: early: xhci-dbc: Fix a potential out-of-bound memory access\n\nIf xdbc_bulk_write() fails, the values in 'buf' can be anything. So the\nstring is not guaranteed to be NULL terminated when xdbc_trace() is called.\n\nReserve an extra byte, which will be zeroed automatically because 'buf' is\na static variable, in order to avoid troubles, should it happen.","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":"usb: early: xhci-dbc: Fix a potential out-of-bound memory access","id":"CVE-2023-53840","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"memory_corruption","year":"2023"},"n_packages":0,"n_references":4,"next":{"headline":"devlink: report devlink_port_type_warn source device","id":"CVE-2023-53841"},"packages":[],"prev":{"headline":"dccp: fix data-race around dp-\u003edccps_mss_cache","id":"CVE-2023-53839"},"products":["Linux"],"published":"2025-12-09","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":"2026-05-11","vendors":["Linux"]},"summary":"A missing null terminator in the Linux kernel xhci-dbc driver can cause out-of-bounds memory access, potentially leading to crashes or code execution.","url":"https://insights.sbomify.com/CVE-2023-53840/"}