{"answers":{"affected":"It affects 2 products.","exploited":"There is no known exploitation of CVE-2021-38578 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2021-38578 is a high-severity vulnerability in TianoCore EDK II, published on 3 Mar 2022. 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-2021-38578 and fix it if it is affected.\n\nWhat it is: CVE-2021-38578 is a high-severity vulnerability in TianoCore EDK II, published on 3 Mar 2022. 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-2021-38578 in the wild and no public exploit code.\n\nAffected product: TianoCore EDK II. 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-2021-38578/ (Markdown: https://insights.sbomify.com/CVE-2021-38578/index.md)","id":"CVE-2021-38578","markdown":"https://insights.sbomify.com/CVE-2021-38578/index.md","name":"CVE-2021-38578","record":{"aliases":["DEBIAN-CVE-2021-38578","GHSA-grqq-3jqg-g95p","OESA-2022-2122","UBUNTU-CVE-2021-38578","openSUSE-SU-2024:12542-1"],"analysis":{"component_type":"hardware_firmware","fix_type":"patch","impacts":["code_execution","privilege_escalation"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"EDK II firmware","requires_auth":"high_privilege","summary":"An integer underflow in EDK II SmmEntryPoint allows attackers to bypass buffer checks, potentially leading to code execution or privilege escalation.","user_interaction":"not_required","vuln_class":"integer_overflow"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"TianoCore","cpe":[{"product":"kernel","vendor":"insyde"},{"product":"edk2","vendor":"tianocore"}],"cvss":{"score":7.4,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:L","version":"3.1"},"cwes":[{"id":"CWE-787","name":"Out-of-bounds Write"},{"id":"CWE-124","name":"Buffer Underwrite"}],"description":"Existing CommBuffer checks in SmmEntryPoint will not catch underflow when computing BufferSize.","ecosystems":["openSUSE:Tumbleweed"],"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":"Integer overflow in EDK II","id":"CVE-2021-38578","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"integer_overflow","year":"2021"},"n_packages":1,"n_references":2,"next":{"headline":"Cross-site scripting in n/a","id":"CVE-2021-38583"},"packages":[{"ecosystem":"openSUSE:Tumbleweed","fixed":["202211-1.1"],"introduced":["0"],"last_affected":[],"package":"ovmf","purl":"pkg:rpm/opensuse/ovmf\u0026distro=openSUSE%20Tumbleweed","source":"openSUSE-SU-2024:12542-1"}],"prev":{"headline":"DO NOT USE THIS CANDIDATE NUMBER.","id":"CVE-2021-38577"},"products":["EDK II"],"published":"2022-03-03","related":[{"cvss_score":8.2,"headline":"Memory corruption in n/a","id":"CVE-2022-36337","kev_date_added":null,"published":"2022-11-23"},{"cvss_score":8.2,"headline":"Privilege escalation in n/a","id":"CVE-2022-29275","kev_date_added":null,"published":"2022-11-15"},{"cvss_score":8.2,"headline":"Memory corruption in n/a","id":"CVE-2022-29276","kev_date_added":null,"published":"2022-11-15"},{"cvss_score":8.2,"headline":"Memory corruption in n/a","id":"CVE-2022-29278","kev_date_added":null,"published":"2022-11-15"},{"cvss_score":8.2,"headline":"Memory corruption in n/a","id":"CVE-2022-29279","kev_date_added":null,"published":"2022-11-15"},{"cvss_score":8.2,"headline":"Memory corruption in n/a","id":"CVE-2022-30771","kev_date_added":null,"published":"2022-11-15"},{"cvss_score":8.2,"headline":"Memory corruption in n/a","id":"CVE-2022-30772","kev_date_added":null,"published":"2022-11-15"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"SUSE","prefix":"openSUSE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2025-11-03","vendors":["TianoCore"]},"summary":"An integer underflow in EDK II SmmEntryPoint allows attackers to bypass buffer checks, potentially leading to code execution or privilege escalation.","url":"https://insights.sbomify.com/CVE-2021-38578/"}