{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2023-53996 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2023-53996 is a critical vulnerability in Linux, published on 24 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-2023-53996 and fix it if it is affected.\n\nWhat it is: CVE-2023-53996 is a critical vulnerability in Linux, published on 24 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-2023-53996 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-2023-53996/ (Markdown: https://insights.sbomify.com/CVE-2023-53996/index.md)","id":"CVE-2023-53996","markdown":"https://insights.sbomify.com/CVE-2023-53996/index.md","name":"CVE-2023-53996","record":{"aliases":["BELL-CVE-2023-53996","DEBIAN-CVE-2023-53996","GHSA-5899-4q59-gc9f","UBUNTU-CVE-2023-53996"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["data_modify"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel","requires_auth":"none","summary":"Incorrect page rounding in SEV hypercalls causes data corruption during live migration by marking non-aligned pages as decrypted.","user_interaction":"not_required","vuln_class":"other"},"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\nx86/sev: Make enc_dec_hypercall() accept a size instead of npages\n\nenc_dec_hypercall() accepted a page count instead of a size, which\nforced its callers to round up. As a result, non-page aligned\nvaddrs caused pages to be spuriously marked as decrypted via the\nencryption status hypercall, which in turn caused consistent\ncorruption of pages during live migration. Live migration requires\naccurate encryption status information to avoid migrating pages\nfrom the wrong perspective.","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":"x86/sev: Make enc_dec_hypercall() accept a size instead of npages","id":"CVE-2023-53996","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"other","year":"2023"},"n_packages":0,"n_references":4,"next":{"headline":"thermal: of: fix double-free on unregistration","id":"CVE-2023-53997"},"packages":[],"prev":{"headline":"net: ipv4: fix one memleak in __inet_del_ifa()","id":"CVE-2023-53995"},"products":["Linux"],"published":"2025-12-24","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":"Incorrect page rounding in SEV hypercalls causes data corruption during live migration by marking non-aligned pages as decrypted.","url":"https://insights.sbomify.com/CVE-2023-53996/"}