{"answers":{"affected":"It affects 6 products.","exploited":"There is no known exploitation of CVE-2022-1891 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2022-1891 yet. Limit exposure of the affected software until one is available.","what":"CVE-2022-1891 is a medium-severity memory corruption vulnerability in Lenovo BIOS, published on 23 Jan 2023. 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-2022-1891 and fix it if it is affected.\n\nWhat it is: CVE-2022-1891 is a medium-severity memory corruption vulnerability in Lenovo BIOS, published on 23 Jan 2023. 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-2022-1891 in the wild and no public exploit code.\n\nAffected product: Lenovo BIOS. 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-2022-1891/ (Markdown: https://insights.sbomify.com/CVE-2022-1891/index.md)","id":"CVE-2022-1891","markdown":"https://insights.sbomify.com/CVE-2022-1891/index.md","name":"CVE-2022-1891","record":{"aliases":["GHSA-f95f-f57p-rc4m"],"analysis":{"component_type":"hardware_firmware","fix_type":"patch","impacts":["code_execution","privilege_escalation"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Lenovo Notebook BIOS","requires_auth":"high_privilege","summary":"A local attacker can exploit a buffer overflow in Lenovo Notebook BIOS to execute arbitrary code and escalate privileges.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"lenovo","cpe":[{"product":"thinkbook_14-iil_firmware","vendor":"lenovo"},{"product":"thinkbook_14-iml_firmware","vendor":"lenovo"},{"product":"thinkbook_15-iil_firmware","vendor":"lenovo"},{"product":"thinkbook_15-iml_firmware","vendor":"lenovo"},{"product":"yoga_c640-13iml_firmware","vendor":"lenovo"},{"product":"yoga_c640-13iml_lte_firmware","vendor":"lenovo"}],"cvss":{"score":6.7,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-120","name":"Buffer Copy without Checking Size of Input"},{"id":"CWE-122","name":"Heap-based Buffer Overflow"}],"description":"A buffer overflow in the SystemLoadDefaultDxe driver in some Lenovo Notebook products may allow an attacker with local privileges to execute arbitrary code.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":null,"headline":"Memory corruption in BIOS","id":"CVE-2022-1891","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"memory_corruption","year":"2022"},"n_packages":0,"n_references":1,"next":{"headline":"Memory corruption in BIOS","id":"CVE-2022-1892"},"packages":[],"prev":{"headline":"Memory corruption in BIOS","id":"CVE-2022-1890"},"products":["BIOS"],"published":"2023-01-23","related":[{"cvss_score":6.7,"headline":"Memory corruption in BIOS","id":"CVE-2022-1890","kev_date_added":null,"published":"2023-01-23"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"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":"2025-04-03","vendors":["Lenovo"]},"summary":"A local attacker can exploit a buffer overflow in Lenovo Notebook BIOS to execute arbitrary code and escalate privileges.","url":"https://insights.sbomify.com/CVE-2022-1891/"}