Description
The dnxhd_decode_header function in libavcodec/dnxhddec.c in FFmpeg 3.0 through 3.3.2 allows remote attackers to cause a denial of service (out-of-array access) or possibly have unspecified other impact via a crafted DNxHD file.
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 | 7:3.3.3-1 | — |
| Debian 13 | ffmpeg | 7:3.3.3-1 | — |
| Debian 12 | ffmpeg | 7:3.3.3-1 | — |
| Debian 9 | ffmpeg | 7:3.2.7-1~deb9u1 | DSA-3957-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.6 | ffmpeg | 3.2.7-r0 | — |
| Alpine v3.5 | ffmpeg | 3.1.10-r0 | — |
| Alpine v3.4 | ffmpeg | 3.1.10-r0 | — |
Advisories 1
- DSA-3957-1 ffmpeg - security update Debian Security (DSA / DLA) · Mar 9, 2026