{"id":"JLSEC-2025-106","summary":"In FFmpeg before 4.2, `avcodec_open2` in `libavcodec/utils.c` allows a NULL pointer dereference and...","details":"In FFmpeg before 4.2, `avcodec_open2` in `libavcodec/utils.c` allows a NULL pointer dereference and possibly unspecified other impact when there is no valid close function pointer.","modified":"2026-07-23T22:30:05.073567713Z","published":"2025-10-19T19:08:53.760Z","upstream":["CVE-2019-17539"],"database_specific":{"license":"CC-BY-4.0","sources":[{"imported":"2026-07-17T20:33:27.004Z","modified":"2026-06-17T02:24:06.310Z","published":"2019-10-14T02:15:10.513Z","url":"https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2019-17539","html_url":"https://nvd.nist.gov/vuln/detail/CVE-2019-17539","database_specific":{"status":"Modified"},"id":"CVE-2019-17539"}]},"references":[{"type":"WEB","url":"https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=15733"},{"type":"WEB","url":"https://github.com/FFmpeg/FFmpeg/commit/8df6884832ec413cf032dfaa45c23b1c7876670c"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2021/01/msg00026.html"},{"type":"WEB","url":"https://security.gentoo.org/glsa/202003-65"},{"type":"WEB","url":"https://usn.ubuntu.com/4431-1/"},{"type":"WEB","url":"https://www.debian.org/security/2020/dsa-4722"}],"affected":[{"package":{"name":"FFMPEG_jll","ecosystem":"Julia","purl":"pkg:julia/FFMPEG_jll?uuid=b22a6f82-2f65-5046-a5b2-351ab43fb4e5"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"4.3.1+0"}]}],"database_specific":{"source":"https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2025/JLSEC-2025-106.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V2","score":"AV:N/AC:L/Au:N/C:P/I:P/A:P"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}