{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2025-29943 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2025-29943 is a medium-severity memory corruption vulnerability in AMD EPYC™ 8004 Series Processors, published on 16 Jan 2026. 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-2025-29943 and fix it if it is affected.\n\nWhat it is: CVE-2025-29943 is a medium-severity memory corruption vulnerability in AMD EPYC™ 8004 Series Processors, published on 16 Jan 2026. 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-2025-29943 in the wild and no public exploit code.\n\nAffected product: AMD EPYC™ 8004 Series Processors. 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-2025-29943/ (Markdown: https://insights.sbomify.com/CVE-2025-29943/index.md)","id":"CVE-2025-29943","markdown":"https://insights.sbomify.com/CVE-2025-29943/index.md","name":"CVE-2025-29943","record":{"aliases":["BELL-CVE-2025-29943","DEBIAN-CVE-2025-29943","GHSA-4vw8-pffj-q9x7","UBUNTU-CVE-2025-29943"],"analysis":{"component_type":"hardware_firmware","fix_type":"patch","impacts":["code_execution","privilege_escalation"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"AMD EPYC processors","requires_auth":"high_privilege","summary":"An admin-privileged attacker can corrupt the stack pointer in SEV-SNP guests by modifying CPU pipeline configuration, potentially leading to code execution or privilege escalation.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"AMD","cpe":[],"cvss":{"score":4.6,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N","version":"4.0"},"cwes":[{"id":"CWE-123","name":"Write-what-where Condition"}],"description":"Write what were condition within AMD CPUs may allow an admin-privileged attacker to modify the configuration of the CPU pipeline potentially resulting in the corruption of the stack pointer inside an SEV-SNP guest.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":"2026-01-20","github_poc":1,"max_poc_stars":0,"metasploit":0,"nuclei":0,"refs":[{"date":"2026-01-20T17:19:31Z","kind":"github_poc","ref":"https://github.com/fevar54/POC_CVE-2025-29943_Write-what-where-Condition","stars":0,"title":"PoC de CVE-2025-29943 (StackWarp): corrupcion del stack en CPUs AMD Zen bajo SEV-SNP (write-what-where)."}],"tier":"poc_unverified"},"has_fix":true,"headline":"Memory corruption in AMD EPYC™ 8004 Series Processors","id":"CVE-2025-29943","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"memory_corruption","year":"2025"},"n_packages":0,"n_references":1,"next":{"headline":"Memory corruption in AMD Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics (formerly codenamed \"Picasso\")","id":"CVE-2025-29944"},"packages":[],"prev":{"headline":"Privilege escalation in AMD EPYC™ 7003 Series Processors","id":"CVE-2025-29939"},"products":["AMD EPYC™ 8004 Series Processors","AMD EPYC™ 9004 Series Processors","AMD EPYC™ 9005 Series Processors","AMD EPYC™ Embedded 7003 Series Processors","AMD EPYC™ Embedded 9005 Series Processors"],"published":"2026-01-16","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"},{"class":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-01-16","vendors":["AMD"]},"summary":"An admin-privileged attacker can corrupt the stack pointer in SEV-SNP guests by modifying CPU pipeline configuration, potentially leading to code execution or privilege escalation.","url":"https://insights.sbomify.com/CVE-2025-29943/"}