Description
FFmpeg through 4.2 has a "Conditional jump or move depends on uninitialised value" issue in h2645_parse because alloc_rbsp_buffer in libavcodec/h2645_parse.c mishandles rbsp_buffer.
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.
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SUSE Package Hub 15 SP1 | ffmpeg-4 | 4.2.1-bp151.5.3.1 | openSUSE-SU-2020:0024-1 |
| SUSE Package Hub 15 | ffmpeg-4 | 4.2.1-bp151.5.3.1 | openSUSE-SU-2020:0024-1 |
| SUSE Package Hub 12 SP2 | ffmpeg-4 | 4.2.1-bp151.5.3.1 | openSUSE-SU-2020:0024-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | ffmpeg-4 | 4.4-5.2 | openSUSE-SU-2024:10754-1 |
| openSUSE Leap 15.1 | ffmpeg-4 | 4.2.1-bp151.5.3.1 | openSUSE-SU-2020:0024-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | ffmpeg | 4.2.1-r0 | — |
| Alpine v3.23 | ffmpeg | 4.2.1-r0 | — |
| Alpine v3.22 | ffmpeg +1 | 4.2.1-r0 | — |
| Alpine v3.21 | ffmpeg +1 | 4.2.1-r0 | — |
| Alpine v3.20 | ffmpeg +1 | 4.2.1-r0 | — |
Show 8 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | ffmpeg +1 | 4.2.1-r0 | — |
| Alpine v3.18 | ffmpeg +1 | 4.2.1-r0 | — |
| Alpine v3.17 | ffmpeg +1 | 4.2.1-r0 | — |
| Alpine v3.16 | ffmpeg +1 | 4.2.1-r0 | — |
| Alpine v3.15 | ffmpeg | 4.2.1-r0 | — |
| Alpine v3.14 | ffmpeg | 4.2.1-r0 | — |
| Alpine v3.13 | ffmpeg | 4.2.1-r0 | — |
| Alpine v3.12 | ffmpeg | 4.2.1-r0 | — |
Advisories 2
- openSUSE-SU-2020:0024-1 Security update for ffmpeg-4 SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:10754-1 ffmpeg-4-4.4-5.2 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
References
- https://trac.ffmpeg.org/ticket/8093
- openSUSE-SU-2020:0024 vendor-advisory
- GLSA-202007-58 vendor-advisory