Description
In FFmpeg 4.0.1, a missing check for failure of a call to init_get_bits8() in the avpriv_ac3_parse_header function in libavcodec/ac3_parser.c may trigger a NULL pointer dereference while converting a crafted AVI file to MPEG4, leading to a denial of service.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | ffmpeg | 7:4.0.2-1 | — |
| Debian 13 | ffmpeg | 7:4.0.2-1 | — |
| Debian 12 | ffmpeg | 7:4.0.2-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | mythtv +2 | No fix yet | — |
| Ubuntu 26.04 LTS | mythtv +2 | No fix yet | — |
| Ubuntu 25.10 | mythtv +2 | No fix yet | — |
| Ubuntu 24.04 LTS | mythtv +2 | No fix yet | — |
| Ubuntu 22.04 LTS | kino +3 | No fix yet | — |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | kino +2 | No fix yet | — |
| Ubuntu 18.04 LTS | kino +2 | No fix yet | — |
| Ubuntu 16.04 LTS | kino +3 | No fix yet | — |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | ffmpeg | 4.0.2-r0 | — |
| Alpine v3.23 | ffmpeg | 4.0.2-r0 | — |
| Alpine v3.22 | ffmpeg +1 | 4.0.2-r0 | — |
| Alpine v3.21 | ffmpeg +1 | 4.0.2-r0 | — |
| Alpine v3.20 | ffmpeg +1 | 4.0.2-r0 | — |
Show 10 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | ffmpeg +1 | 4.0.2-r0 | — |
| Alpine v3.18 | ffmpeg +1 | 4.0.2-r0 | — |
| Alpine v3.17 | ffmpeg +1 | 4.0.2-r0 | — |
| Alpine v3.16 | ffmpeg +1 | 4.0.2-r0 | — |
| Alpine v3.15 | ffmpeg | 4.0.2-r0 | — |
| Alpine v3.14 | ffmpeg | 4.0.2-r0 | — |
| Alpine v3.13 | ffmpeg | 4.0.2-r0 | — |
| Alpine v3.12 | ffmpeg | 4.0.2-r0 | — |
| Alpine v3.11 | ffmpeg | 4.0.2-r0 | — |
| Alpine v3.10 | ffmpeg | 4.0.2-r0 | — |