{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-39670 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2021-39670 is a medium-severity denial of service vulnerability in Google Android, published on 10 May 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-2021-39670 and fix it if it is affected.\n\nWhat it is: CVE-2021-39670 is a medium-severity denial of service vulnerability in Google Android, published on 10 May 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-2021-39670 in the wild and no public exploit code.\n\nAffected product: Google Android. 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-2021-39670/ (Markdown: https://insights.sbomify.com/CVE-2021-39670/index.md)","id":"CVE-2021-39670","markdown":"https://insights.sbomify.com/CVE-2021-39670/index.md","name":"CVE-2021-39670","record":{"aliases":["A-204087139","ASB-A-204087139","GHSA-jmqc-pfj3-c33g"],"analysis":{"component_type":"operating_system","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Android OS","requires_auth":"low_privilege","summary":"A local attacker can cause a permanent denial of service in Android via improper input validation in WallpaperManager.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"google_android","cpe":[{"product":"android","vendor":"google"}],"cvss":{"score":5.5,"severity":"medium","source":"nvd","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-770","name":"Allocation of Resources Without Limits or Throttling"}],"description":"In setStream of WallpaperManager.java, there is a possible way to cause a permanent DoS due to improper input validation. This could lead to local denial of service with User execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-12 Android-12LAndroid ID: A-204087139","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":"2023-02-23","github_poc":1,"max_poc_stars":16,"metasploit":0,"nuclei":0,"refs":[{"date":"2023-02-23T06:36:47Z","kind":"github_poc","ref":"https://github.com/Supersonic/Wallbreak","stars":16,"title":"Exploit app for CVE-2021-39670 and CVE-2021-39690, two permanent denial-of-service vulnerabilities in Android's wallpaper system"}],"tier":"poc_unverified"},"has_fix":true,"headline":"Denial of service in Android","id":"CVE-2021-39670","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"google:android","products":["google:android"],"type":"denial_of_service","year":"2021"},"n_packages":0,"n_references":1,"next":{"headline":"Information disclosure in Android","id":"CVE-2021-39671"},"packages":[],"prev":{"headline":"Security feature bypass in Android","id":"CVE-2021-39669"},"products":["Android"],"published":"2022-05-10","related":[{"cvss_score":8.8,"headline":"Google Pixel Improper Authorization","id":"CVE-2026-58704","kev_date_added":"2026-09-16","published":"2026-09-15"},{"cvss_score":8.8,"headline":"Android Runtime Use-After-Free","id":"CVE-2025-48543","kev_date_added":"2025-09-04","published":"2025-09-04"},{"cvss_score":8.8,"headline":"Android Framework Privilege Escalation","id":"CVE-2023-35674","kev_date_added":"2023-09-13","published":"2023-09-11"},{"cvss_score":8.4,"headline":"Android Framework Integer Overflow","id":"CVE-2025-48595","kev_date_added":"2026-06-02","published":"2026-06-01"},{"cvss_score":8.1,"headline":"Android Pixel Privilege Escalation","id":"CVE-2024-32896","kev_date_added":"2024-06-13","published":"2024-06-13"},{"cvss_score":7.8,"headline":"Android Framework Privilege Escalation","id":"CVE-2025-48572","kev_date_added":"2025-12-02","published":"2025-12-08"},{"cvss_score":7.8,"headline":"Android Pixel Privilege Escalation","id":"CVE-2024-29748","kev_date_added":"2024-04-04","published":"2024-04-05"}],"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)"},{"class":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-04","vendors":["n/a"]},"summary":"A local attacker can cause a permanent denial of service in Android via improper input validation in WallpaperManager.","url":"https://insights.sbomify.com/CVE-2021-39670/"}