{"answers":{"affected":"1 open source package ship an affected version, including re2.","exploited":"There is no known exploitation of OSV-2021-921 in the wild and no public exploit code.","fix":"No fix has been published for OSV-2021-921 yet. Limit exposure of the affected software until one is available.","what":"OSV-2021-921 is a memory corruption vulnerability in re2, published on 6 Jul 2021. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for OSV-2021-921 and fix it if it is affected.\n\nWhat it is: OSV-2021-921 is a memory corruption vulnerability in re2, published on 6 Jul 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of OSV-2021-921 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- re2 (OSS-Fuzz): affected all versions; no fix listed\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/OSV-2021-921/ (Markdown: https://insights.sbomify.com/OSV-2021-921/index.md)","id":"OSV-2021-921","markdown":"https://insights.sbomify.com/OSV-2021-921/index.md","name":"OSV-2021-921","record":{"aliases":[],"analysis":{"component_type":"library","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"RE2 regex library","requires_auth":"none","summary":"A stack buffer overflow in the RE2 regex library allows attackers to cause a denial of service via crafted input.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":null,"cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=35821\n\n```\nCrash type: Stack-buffer-overflow READ 1\nCrash state:\nbool re2::DFA::InlinedSearchLoop\u003ctrue, true, true\u003e\nre2::DFA::Search\nre2::Prog::SearchDFA\n```","ecosystems":["OSS-Fuzz"],"exploits":{"exploitdb":null,"first_seen":null,"github_poc":null,"max_poc_stars":null,"metasploit":null,"nuclei":null,"refs":[],"tier":null},"has_fix":false,"headline":"Stack-buffer-overflow in bool re2::DFA::InlinedSearchLoop\u003ctrue, true, true\u003e","id":"OSV-2021-921","indexable":true,"kev":null,"kind":"advisory","links":{"ecosystem":"OSS-Fuzz","product":null,"products":[],"type":"memory_corruption","year":"2021"},"n_packages":1,"n_references":null,"packages":[{"ecosystem":"OSS-Fuzz","fixed":[],"introduced":[],"last_affected":[],"package":"re2","purl":"pkg:generic/re2","source":"OSV-2021-921"}],"products":null,"published":"2021-07-06","related":[],"sources":[{"class":"attribution","licence":"CC BY 4.0","name":"OSS-Fuzz","prefix":"OSV"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":null,"updated":null,"vendors":null},"summary":"A stack buffer overflow in the RE2 regex library allows attackers to cause a denial of service via crafted input.","url":"https://insights.sbomify.com/OSV-2021-921/"}