This page tracks the Ubuntu fix status. The vulnerability itself is described on the main CVE page.
View CVE-2026-70628 →
UBUNTU-CVE-2026-70628
FFmpeg versions from 0.5 up to, but not including, 9.0 contain a signed integer overflow vulnerability in the DVB subtitle parser in libavcodec/dvbsub...
Original description
The description as published by the source.
FFmpeg versions from 0.5 up to, but not including, 9.0 contain a signed integer overflow vulnerability in the DVB subtitle parser in libavcodec/dvbsub_parser.c that allows attackers to trigger a heap buffer overflow by supplying a crafted WTV file. The overflow causes the bounds-check guard expression to wrap to INT_MIN, bypassing the PARSE_BUF_SIZE comparison and invoking memcpy() with attacker-controlled data into a heap buffer, resulting in an out-of-bounds heap write and potential memory corruption or code execution.
Source: OSV.dev (Open Source Vulnerabilities) OSV
Affected packages
Ubuntu:Pro:14.04:LTS
libav
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:Pro:16.04:LTS
ffmpeg
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7:2.8.17-0ubuntu0.1+esm16"}]}]
Ubuntu:Pro:18.04:LTS
ffmpeg
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7:3.4.11-0ubuntu0.1+esm14"}]}]
Ubuntu:Pro:20.04:LTS
ffmpeg
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7:4.2.7-0ubuntu0.1+esm15"}]}]
Ubuntu:Pro:22.04:LTS
ffmpeg
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7:4.4.2-0ubuntu0.22.04.1+esm14"}]}]
Ubuntu:Pro:24.04:LTS
ffmpeg
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7:6.1.1-3ubuntu5+esm12"}]}]
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+esm3"}]}]
References
- advisory ubuntu.com
- advisory ubuntu.com
- report ubuntu.com
- report cve.org
- report code.ffmpeg.org
- report code.ffmpeg.org
- report code.ffmpeg.org
- report code.ffmpeg.org