{"id":"JLSEC-2026-1177","summary":"FFmpeg versions 4.4 through 8.1.2 contain an out-of-bounds memory access vulnerability in the ADX...","details":"FFmpeg versions 4.4 through 8.1.2 contain an out-of-bounds memory access vulnerability in the ADX audio decoder within `libavcodec/adxdec.c` that allows attackers to trigger both out-of-bounds reads and writes by supplying a crafted ADX or AAX audio file with a mid-stream channel layout change. When `AV_PKT_DATA_NEW_EXTRADATA` side data is received mid-stream, the `adx_decode_frame` function re-parses the stream header but fails to update the internal channel state, causing subsequent decoding operations to access the prev[] state array using a stale channel count.","modified":"2026-08-08T23:15:04.397731651Z","published":"2026-08-07T13:27:45.313Z","upstream":["CVE-2026-64835","GHSA-p2v8-4c4f-rwpq","EUVD-2026-47760"],"database_specific":{"license":"CC-BY-4.0","sources":[{"url":"https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-64835","html_url":"https://nvd.nist.gov/vuln/detail/CVE-2026-64835","database_specific":{"status":"Analyzed"},"id":"CVE-2026-64835","imported":"2026-08-08T05:24:16.097Z","modified":"2026-07-28T17:02:06.783Z","published":"2026-07-22T18:17:05.917Z"},{"modified":"2026-07-22T18:32:48Z","published":"2026-07-22T18:32:40Z","url":"https://api.github.com/advisories/GHSA-p2v8-4c4f-rwpq","html_url":"https://github.com/advisories/GHSA-p2v8-4c4f-rwpq","id":"GHSA-p2v8-4c4f-rwpq","imported":"2026-08-08T05:24:20.835Z"},{"html_url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-47760","id":"EUVD-2026-47760","imported":"2026-08-08T05:24:18.619Z","modified":"2026-07-28T01:06:05Z","published":"2026-07-22T17:24:05Z","url":"https://euvdservices.enisa.europa.eu/api/enisaid?id=EUVD-2026-47760"}]},"references":[{"type":"WEB","url":"https://code.ffmpeg.org/FFmpeg/FFmpeg/commit/1836ef96846937a6cc2443698a693104f5c0b21e"},{"type":"WEB","url":"https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/23659"},{"type":"WEB","url":"https://github.com/advisories/GHSA-p2v8-4c4f-rwpq"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-64835"},{"type":"WEB","url":"https://www.vulncheck.com/advisories/ffmpeg-out-of-bounds-memory-access-in-adx-audio-decoder"}],"affected":[{"package":{"name":"FFMPEG_jll","ecosystem":"Julia","purl":"pkg:julia/FFMPEG_jll?uuid=b22a6f82-2f65-5046-a5b2-351ab43fb4e5"},"ranges":[{"type":"SEMVER","events":[{"introduced":"4.4.0+0"},{"fixed":"9.0.0+0"}]}],"database_specific":{"source":"https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-1177.json"}},{"package":{"name":"FFMPEG_nogpl_jll","ecosystem":"Julia","purl":"pkg:julia/FFMPEG_nogpl_jll?uuid=a6892c6b-5768-548c-b024-ff8dabf482c5"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"9.0.0+0"}]}],"database_specific":{"source":"https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-1177.json"}},{"package":{"name":"FFplay_jll","ecosystem":"Julia","purl":"pkg:julia/FFplay_jll?uuid=c4dce911-e170-5107-8314-c7bdc6785395"},"ranges":[{"type":"SEMVER","events":[{"introduced":"4.4.4+0"},{"fixed":"9.0.0+0"}]}],"database_specific":{"source":"https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-1177.json"}}],"schema_version":"1.8.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"},{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"}]}