This page tracks the Ubuntu fix status. The vulnerability itself is described on the main CVE page. View CVE-2026-64835 →

UBUNTU-CVE-2026-64835

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...

Original description

The description as published by the source.

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.

Source: OSV.dev (Open Source Vulnerabilities) OSV

Affected packages

Ubuntu:Pro:14.04:LTS libav

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Ubuntu:Pro:22.04:LTS ffmpeg

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7:4.4.2-0ubuntu0.22.04.1+esm15"}]}]

Ubuntu:Pro:24.04:LTS ffmpeg

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7:6.1.1-3ubuntu5+esm13"}]}]

Ubuntu:26.10 ffmpeg

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Ubuntu:Pro:26.04:LTS ffmpeg

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7:8.0.1-3ubuntu2+esm4"}]}]

References

advisory ubuntu.com
advisory ubuntu.com
report ubuntu.com
report cve.org
report code.ffmpeg.org