{"answers":{"affected":"It affects 2 products.","exploited":"There is no known exploitation of CVE-2021-38171 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2021-38171 is a critical vulnerability in Debian Debian Linux, published on 21 Aug 2021. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-38171 and fix it if it is affected.\n\nWhat it is: CVE-2021-38171 is a critical vulnerability in Debian Debian Linux, published on 21 Aug 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 CVE-2021-38171 in the wild and no public exploit code.\n\nAffected product: Debian Debian Linux. 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-2021-38171/ (Markdown: https://insights.sbomify.com/CVE-2021-38171/index.md)","id":"CVE-2021-38171","markdown":"https://insights.sbomify.com/CVE-2021-38171/index.md","name":"CVE-2021-38171","record":{"aliases":["CLEANSTART-2024-LF99965","DEBIAN-CVE-2021-38171","GHSA-8cmw-hp26-wrpm","JLSEC-2025-118","SUSE-SU-2021:3193-1","SUSE-SU-2021:3212-1","UBUNTU-CVE-2021-38171","openSUSE-SU-2021:3193-1"],"analysis":{"component_type":"library","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"FFmpeg multimedia library","requires_auth":"none","summary":"FFmpeg fails to check the return value of init_get_bits in ADTS decoding, potentially leading to a null pointer dereference and denial of service.","user_interaction":"not_required","vuln_class":"null_dereference"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"debian_linux","vendor":"debian"},{"product":"ffmpeg","vendor":"ffmpeg"}],"cvss":{"score":9.8,"severity":"critical","source":"nvd","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-252","name":"Unchecked Return Value"}],"description":"adts_decode_extradata in libavformat/adtsenc.c in FFmpeg 4.4 does not check the init_get_bits return value, which is a necessary step because the second argument to init_get_bits can be crafted.","ecosystems":["SUSE:Enterprise Storage 6","SUSE:Linux Enterprise High Performance Computing 15 SP1-ESPOS","SUSE:Linux Enterprise High Performance Computing 15 SP1-LTSS","SUSE:Linux Enterprise High Performance Computing 15-ESPOS","SUSE:Linux Enterprise High Performance Computing 15-LTSS","SUSE:Linux Enterprise Module for Desktop Applications 15 SP2","SUSE:Linux Enterprise Module for Desktop Applications 15 SP3","SUSE:Linux Enterprise Module for Package Hub 15 SP2","SUSE:Linux Enterprise Module for Package Hub 15 SP3","SUSE:Linux Enterprise Server 15 SP1-BCL","SUSE:Linux Enterprise Server 15 SP1-LTSS","SUSE:Linux Enterprise Server 15-LTSS","SUSE:Linux Enterprise Server for SAP Applications 15","SUSE:Linux Enterprise Server for SAP Applications 15 SP1","SUSE:Linux Enterprise Workstation Extension 15 SP2","SUSE:Linux Enterprise Workstation Extension 15 SP3","openSUSE:Leap 15.3"],"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":"Null dereference in n/a","id":"CVE-2021-38171","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"debian:debian_linux","products":["debian:debian_linux","ffmpeg:ffmpeg"],"type":"null_dereference","year":"2021"},"n_packages":17,"n_references":6,"next":{"headline":"Memory corruption in n/a","id":"CVE-2021-38172"},"packages":[{"ecosystem":"SUSE:Enterprise Storage 6","fixed":["3.4.2-4.37.1"],"introduced":["0"],"last_affected":[],"package":"ffmpeg","purl":"pkg:rpm/suse/ffmpeg\u0026distro=SUSE%20Enterprise%20Storage%206","source":"SUSE-SU-2021:3212-1"},{"ecosystem":"SUSE:Linux Enterprise High Performance Computing 15 SP1-ESPOS","fixed":["3.4.2-4.37.1"],"introduced":["0"],"last_affected":[],"package":"ffmpeg","purl":"pkg:rpm/suse/ffmpeg\u0026distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-ESPOS","source":"SUSE-SU-2021:3212-1"},{"ecosystem":"SUSE:Linux Enterprise High Performance Computing 15 SP1-LTSS","fixed":["3.4.2-4.37.1"],"introduced":["0"],"last_affected":[],"package":"ffmpeg","purl":"pkg:rpm/suse/ffmpeg\u0026distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-LTSS","source":"SUSE-SU-2021:3212-1"},{"ecosystem":"SUSE:Linux Enterprise High Performance Computing 15-ESPOS","fixed":["3.4.2-4.37.1"],"introduced":["0"],"last_affected":[],"package":"ffmpeg","purl":"pkg:rpm/suse/ffmpeg\u0026distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-ESPOS","source":"SUSE-SU-2021:3212-1"},{"ecosystem":"SUSE:Linux Enterprise High Performance Computing 15-LTSS","fixed":["3.4.2-4.37.1"],"introduced":["0"],"last_affected":[],"package":"ffmpeg","purl":"pkg:rpm/suse/ffmpeg\u0026distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-LTSS","source":"SUSE-SU-2021:3212-1"},{"ecosystem":"SUSE:Linux Enterprise Module for Desktop Applications 15 SP2","fixed":["3.4.2-11.11.1"],"introduced":["0"],"last_affected":[],"package":"ffmpeg","purl":"pkg:rpm/suse/ffmpeg\u0026distro=SUSE%20Linux%20Enterprise%20Module%20for%20Desktop%20Applications%2015%20SP2","source":"SUSE-SU-2021:3193-1"},{"ecosystem":"SUSE:Linux Enterprise Module for Desktop Applications 15 SP3","fixed":["3.4.2-11.11.1"],"introduced":["0"],"last_affected":[],"package":"ffmpeg","purl":"pkg:rpm/suse/ffmpeg\u0026distro=SUSE%20Linux%20Enterprise%20Module%20for%20Desktop%20Applications%2015%20SP3","source":"SUSE-SU-2021:3193-1"},{"ecosystem":"SUSE:Linux Enterprise Module for Package Hub 15 SP2","fixed":["3.4.2-11.11.1"],"introduced":["0"],"last_affected":[],"package":"ffmpeg","purl":"pkg:rpm/suse/ffmpeg\u0026distro=SUSE%20Linux%20Enterprise%20Module%20for%20Package%20Hub%2015%20SP2","source":"SUSE-SU-2021:3193-1"},{"ecosystem":"SUSE:Linux Enterprise Module for Package Hub 15 SP3","fixed":["3.4.2-11.11.1"],"introduced":["0"],"last_affected":[],"package":"ffmpeg","purl":"pkg:rpm/suse/ffmpeg\u0026distro=SUSE%20Linux%20Enterprise%20Module%20for%20Package%20Hub%2015%20SP3","source":"SUSE-SU-2021:3193-1"},{"ecosystem":"SUSE:Linux Enterprise Server 15 SP1-BCL","fixed":["3.4.2-4.37.1"],"introduced":["0"],"last_affected":[],"package":"ffmpeg","purl":"pkg:rpm/suse/ffmpeg\u0026distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP1-BCL","source":"SUSE-SU-2021:3212-1"},{"ecosystem":"SUSE:Linux Enterprise Server 15 SP1-LTSS","fixed":["3.4.2-4.37.1"],"introduced":["0"],"last_affected":[],"package":"ffmpeg","purl":"pkg:rpm/suse/ffmpeg\u0026distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP1-LTSS","source":"SUSE-SU-2021:3212-1"},{"ecosystem":"SUSE:Linux Enterprise Server 15-LTSS","fixed":["3.4.2-4.37.1"],"introduced":["0"],"last_affected":[],"package":"ffmpeg","purl":"pkg:rpm/suse/ffmpeg\u0026distro=SUSE%20Linux%20Enterprise%20Server%2015-LTSS","source":"SUSE-SU-2021:3212-1"},{"ecosystem":"SUSE:Linux Enterprise Server for SAP Applications 15","fixed":["3.4.2-4.37.1"],"introduced":["0"],"last_affected":[],"package":"ffmpeg","purl":"pkg:rpm/suse/ffmpeg\u0026distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015","source":"SUSE-SU-2021:3212-1"},{"ecosystem":"SUSE:Linux Enterprise Server for SAP Applications 15 SP1","fixed":["3.4.2-4.37.1"],"introduced":["0"],"last_affected":[],"package":"ffmpeg","purl":"pkg:rpm/suse/ffmpeg\u0026distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP1","source":"SUSE-SU-2021:3212-1"},{"ecosystem":"SUSE:Linux Enterprise Workstation Extension 15 SP2","fixed":["3.4.2-11.11.1"],"introduced":["0"],"last_affected":[],"package":"ffmpeg","purl":"pkg:rpm/suse/ffmpeg\u0026distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2015%20SP2","source":"SUSE-SU-2021:3193-1"},{"ecosystem":"SUSE:Linux Enterprise Workstation Extension 15 SP3","fixed":["3.4.2-11.11.1"],"introduced":["0"],"last_affected":[],"package":"ffmpeg","purl":"pkg:rpm/suse/ffmpeg\u0026distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2015%20SP3","source":"SUSE-SU-2021:3193-1"},{"ecosystem":"openSUSE:Leap 15.3","fixed":["3.4.2-11.11.1"],"introduced":["0"],"last_affected":[],"package":"ffmpeg","purl":"pkg:rpm/opensuse/ffmpeg\u0026distro=openSUSE%20Leap%2015.3","source":"openSUSE-SU-2021:3193-1"}],"prev":{"headline":"Command injection in n/a","id":"CVE-2021-38169"},"products":["n/a"],"published":"2021-08-21","related":[{"cvss_score":10,"headline":"ProFTPD Improper Access Control","id":"CVE-2015-3306","kev_date_added":"2026-10-08","published":"2015-05-18"},{"cvss_score":9.9,"headline":"RoundCube Webmail Deserialization of Untrusted Data","id":"CVE-2025-49113","kev_date_added":"2026-02-20","published":"2025-06-02"},{"cvss_score":9.8,"headline":"GNU InetUtils Argument Injection","id":"CVE-2026-24061","kev_date_added":"2026-01-26","published":"2026-01-21"},{"cvss_score":9.8,"headline":"Linux Kernel Improper Check for Unusual or Exceptional Conditions","id":"CVE-2025-39682","kev_date_added":"2026-09-18","published":"2025-09-05"},{"cvss_score":9.8,"headline":"Mozilla Firefox Use-After-Free","id":"CVE-2024-9680","kev_date_added":"2024-10-15","published":"2024-10-09"},{"cvss_score":9.8,"headline":"RARLAB UnRAR Directory Traversal","id":"CVE-2022-30333","kev_date_added":"2022-08-09","published":"2022-05-09"},{"cvss_score":9.8,"headline":"Roundcube Webmail SQL Injection","id":"CVE-2021-44026","kev_date_added":"2023-06-22","published":"2021-11-19"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"SUSE","prefix":"SUSE"},{"class":"attribution","licence":"CC BY 4.0","name":"SUSE","prefix":"openSUSE"},{"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":"2024-08-04","vendors":["n/a"]},"summary":"FFmpeg fails to check the return value of init_get_bits in ADTS decoding, potentially leading to a null pointer dereference and denial of service.","url":"https://insights.sbomify.com/CVE-2021-38171/"}