{"answers":{"affected":"It affects 5 products.","exploited":"There is no known exploitation of CVE-2021-26318 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2021-26318 is a medium-severity vulnerability in AMD All supported processors, published on 13 Oct 2021. 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-2021-26318 and fix it if it is affected.\n\nWhat it is: CVE-2021-26318 is a medium-severity vulnerability in AMD All supported processors, published on 13 Oct 2021. 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-2021-26318 in the wild and no public exploit code.\n\nAffected product: AMD All supported 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-2021-26318/ (Markdown: https://insights.sbomify.com/CVE-2021-26318/index.md)","id":"CVE-2021-26318","markdown":"https://insights.sbomify.com/CVE-2021-26318/index.md","name":"CVE-2021-26318","record":{"aliases":["GHSA-8rf7-vpj6-3967"],"analysis":{"component_type":"hardware_firmware","fix_type":"patch","impacts":["data_read"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"AMD CPU","requires_auth":"low_privilege","summary":"Attackers can exploit timing and power side channels in AMD CPUs to leak kernel address space information, requiring firmware or microcode updates.","user_interaction":"not_required","vuln_class":"information_disclosure"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"AMD","cpe":[{"product":"athlon_firmware","vendor":"amd"},{"product":"athlon_pro_firmware","vendor":"amd"},{"product":"epyc_firmware","vendor":"amd"},{"product":"ryzen_firmware","vendor":"amd"},{"product":"ryzen_pro_firmware","vendor":"amd"}],"cvss":{"score":4.7,"severity":"medium","source":"nvd","vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N","version":"3.1"},"cwes":[{"id":"CWE-203","name":"Observable Discrepancy"},{"id":"CWE-208","name":"Observable Timing Discrepancy"}],"description":"A timing and power-based side channel attack leveraging the x86 PREFETCH instructions on some AMD CPUs could potentially result in leaked kernel address space information.","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":"Side-channels Related to the x86 PREFETCH Instruction","id":"CVE-2021-26318","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"information_disclosure","year":"2021"},"n_packages":0,"n_references":1,"next":{"headline":"DO NOT USE THIS CANDIDATE NUMBER.","id":"CVE-2021-26319"},"packages":[],"prev":{"headline":"Security feature bypass in Athlon™ Series","id":"CVE-2021-26317"},"products":["All supported processors"],"published":"2021-10-13","related":[],"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":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-09-16","vendors":["AMD"]},"summary":"Attackers can exploit timing and power side channels in AMD CPUs to leak kernel address space information, requiring firmware or microcode updates.","url":"https://insights.sbomify.com/CVE-2021-26318/"}