{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2023-53769 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2023-53769 is a critical vulnerability in Linux, published on 8 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-2023-53769 and fix it if it is affected.\n\nWhat it is: CVE-2023-53769 is a critical vulnerability in Linux, published on 8 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-2023-53769 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-2023-53769/ (Markdown: https://insights.sbomify.com/CVE-2023-53769/index.md)","id":"CVE-2023-53769","markdown":"https://insights.sbomify.com/CVE-2023-53769/index.md","name":"CVE-2023-53769","record":{"aliases":["BELL-CVE-2023-53769","DEBIAN-CVE-2023-53769","GHSA-3jg5-f6fr-mw89","UBUNTU-CVE-2023-53769"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["data_read","data_modify"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel","requires_auth":"none","summary":"A malicious host can read or tamper with SEV guest messages due to direct access to shared memory, compromising confidentiality and integrity.","user_interaction":"not_required","vuln_class":"information_disclosure"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Linux","cpe":[],"cvss":{"score":9.3,"severity":"critical","source":"cna","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","version":"3.1"},"cwes":[],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nvirt/coco/sev-guest: Double-buffer messages\n\nThe encryption algorithms read and write directly to shared unencrypted\nmemory, which may leak information as well as permit the host to tamper\nwith the message integrity. Instead, copy whole messages in or out as\nneeded before doing any computation on them.","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":"virt/coco/sev-guest: Double-buffer messages","id":"CVE-2023-53769","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"information_disclosure","year":"2023"},"n_packages":0,"n_references":4,"next":{"headline":"MiniDVBLinux 5.4 Unauthenticated Configuration Download via Backup Endpoint","id":"CVE-2023-53770"},"packages":[],"prev":{"headline":"regmap-irq: Fix out-of-bounds access when allocating config buffers","id":"CVE-2023-53768"},"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 malicious host can read or tamper with SEV guest messages due to direct access to shared memory, compromising confidentiality and integrity.","url":"https://insights.sbomify.com/CVE-2023-53769/"}