{"answers":{"affected":"1 open source package ship an affected version, including skia.","exploited":"There is no known exploitation of OSV-2021-503 in the wild and no public exploit code.","fix":"No fix has been published for OSV-2021-503 yet. Limit exposure of the affected software until one is available.","what":"OSV-2021-503 is an use after free vulnerability in skia, published on 7 Mar 2021."},"fix_prompt":"Check this codebase for OSV-2021-503 and fix it if it is affected.\n\nWhat it is: OSV-2021-503 is an use after free vulnerability in skia, published on 7 Mar 2021. \nExploitation: There is no known exploitation of OSV-2021-503 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- skia (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-2021-503/ (Markdown: https://insights.sbomify.com/OSV-2021-503/index.md)","id":"OSV-2021-503","markdown":"https://insights.sbomify.com/OSV-2021-503/index.md","name":"OSV-2021-503","record":{"aliases":[],"analysis":{"component_type":"library","fix_type":"patch","impacts":["denial_of_service","code_execution"],"network_reachable":"unknown","non_default_config":false,"product_category":"Skia graphics library","requires_auth":"none","summary":"A use-after-poison vulnerability in the Skia graphics library allows attackers to cause a crash or potentially execute arbitrary code via crafted input.","user_interaction":"not_required","vuln_class":"use_after_free"},"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=31765\n\n```\nCrash type: Use-after-poison READ 8\nCrash state:\nstd::__1::unique_ptr\u003cSkSL::Expression, std::__1::default_delete\u003cSkSL::Expression\nSkSL::DefinitionMap::getKnownDefinition\nSkSL::VariableReference::constantPropagate\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":"Use-after-poison in std::__1::unique_ptr\u003cSkSL::Expression, std::__1::default_delete\u003cSkSL::Expression","id":"OSV-2021-503","indexable":true,"kev":null,"kind":"advisory","links":{"ecosystem":"OSS-Fuzz","product":null,"products":[],"type":"use_after_free","year":"2021"},"n_packages":1,"n_references":null,"packages":[{"ecosystem":"OSS-Fuzz","fixed":[],"introduced":[],"last_affected":[],"package":"skia","purl":"pkg:generic/skia","source":"OSV-2021-503"}],"products":null,"published":"2021-03-07","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 use-after-poison vulnerability in the Skia graphics library allows attackers to cause a crash or potentially execute arbitrary code via crafted input.","url":"https://insights.sbomify.com/OSV-2021-503/"}