Description
FFmpeg versions from 3.0 up to, but not including, 9.0 contain an uninitialized heap memory read vulnerability in the native Screenpresso decoder (libavcodec/screenpresso.c) that allows attackers to recover sensitive memory contents by supplying a crafted SPV1 packet with a valid zlib stream that decompresses fewer bytes than the full frame requires. The screenpresso_decode_frame() function fails to validate the produced byte count before calling av_image_copy_plane() to copy the complete frame dimensions from the persistent ctx->inflated_buf buffer, causing unwritten heap memory from prior allocations or prior frames to be copied into decoded output and potentially exposing sensitive data such as userspace addresses from persistent decoding services.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| FFmpeg | FFmpeg | 3.0 – < 9.0 | 9.0 |
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 | 7:9.0.2-1 | — |
| Debian 13 | ffmpeg | No fix yet | — |
| Debian 12 | ffmpeg | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | ffmpeg | No fix yet | — |
Show 7 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 26.04 LTS | ffmpeg | No fix yet | — |
| Ubuntu Pro 24.04 LTS | ffmpeg | No fix yet | — |
| Ubuntu Pro 22.04 LTS | ffmpeg | 7:4.4.2-0ubuntu0.22.04.1+esm16 | USN-8750-1 |
| Ubuntu Pro 20.04 LTS | ffmpeg | 7:4.2.7-0ubuntu0.1+esm17 | USN-8750-1 |
| Ubuntu Pro 18.04 LTS | ffmpeg | No fix yet | — |
| Ubuntu Pro 16.04 LTS | ffmpeg | No fix yet | — |
| Ubuntu Pro 14.04 LTS | libav | No fix yet | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP7 | ffmpeg | 3.4.2-150200.11.88.1 | SUSE-SU-2026:5220-1 |
| SLES 15 SP7 | ffmpeg-4 | 4.4.8-150600.13.55.1 | SUSE-SU-2026:4149-1 |
| SLES 15 SP6 | ffmpeg | 3.4.2-150200.11.88.1 | SUSE-SU-2026:5220-1 |
| SLES 15 SP5 | ffmpeg | 3.4.2-150200.11.88.1 | SUSE-SU-2026:5220-1 |
| SLES 15 SP4 | ffmpeg | 3.4.2-150200.11.88.1 | SUSE-SU-2026:5220-1 |
| SLES 15 SP4 | ffmpeg-4 | 4.4.8-150400.3.75.1 | SUSE-SU-2026:4150-1 |
Show 5 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 15 SP6 | ffmpeg | 3.4.2-150200.11.88.1 | SUSE-SU-2026:5220-1 |
| SLES for SAP 15 SP5 | ffmpeg | 3.4.2-150200.11.88.1 | SUSE-SU-2026:5220-1 |
| SLES for SAP 15 SP4 | ffmpeg | 3.4.2-150200.11.88.1 | SUSE-SU-2026:5220-1 |
| SLES for SAP 15 SP4 | ffmpeg-4 | 4.4.8-150400.3.75.1 | SUSE-SU-2026:4150-1 |
| SLE HPC 15 SP5 | ffmpeg | 3.4.2-150200.11.88.1 | SUSE-SU-2026:5220-1 |
| SLE HPC 15 SP4 | ffmpeg | 3.4.2-150200.11.88.1 | SUSE-SU-2026:5220-1 |
| SLE HPC 15 SP4 | ffmpeg-4 | 4.4.8-150400.3.75.1 | SUSE-SU-2026:4150-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | ffmpeg-4 | 4.4.8-5.1 | openSUSE-SU-2026:11716-1 |
| openSUSE Tumbleweed | ffmpeg-7 | 7.1.5-2.1 | openSUSE-SU-2026:11665-1 |
| openSUSE Tumbleweed | ffmpeg-8 | 8.1.2-3.1 | openSUSE-SU-2026:11682-1 |
| openSUSE Tumbleweed | ffmpeg-9 | 9.0.1-3.1 | openSUSE-SU-2026:11659-1 |
| openSUSE Leap 16.0 | ffmpeg-7 | 7.1.5-160000.1.1 | openSUSE-SU-2026:21877-1 |
Wolfi
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Wolfi rolling | ffmpeg-7 +2 | No fix yet | — |
| Wolfi rolling | ffmpeg-8.1 | 8.1.3-r0 | — |
Advisories 10
- SUSE-SU-2026:5220-1 Security update for ffmpeg SUSE / openSUSE Security Updates · Nov 13, 2026
- WID-SEC-2026-2700 ffmpeg: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 12, 2026
- openSUSE-SU-2026:21877-1 Security update for ffmpeg-7 SUSE / openSUSE Security Updates · Sep 25, 2026
- SUSE-SU-2026:4149-1 Security update for ffmpeg-4 SUSE / openSUSE Security Updates · Sep 15, 2026
- SUSE-SU-2026:4150-1 Security update for ffmpeg-4 SUSE / openSUSE Security Updates · Sep 15, 2026
- USN-8750-1 ffmpeg vulnerabilities Ubuntu Security Notices (USN) · Sep 14, 2026
- openSUSE-SU-2026:11716-1 ffmpeg-4-4.4.8-5.1 on GA media SUSE / openSUSE Security Updates · Sep 9, 2026
- openSUSE-SU-2026:11682-1 ffmpeg-8-8.1.2-3.1 on GA media SUSE / openSUSE Security Updates · Sep 5, 2026
- openSUSE-SU-2026:11665-1 ffmpeg-7-7.1.5-2.1 on GA media SUSE / openSUSE Security Updates · Sep 3, 2026
- openSUSE-SU-2026:11659-1 ffmpeg-9-libavcodec-devel-9.0.1-3.1 on GA media SUSE / openSUSE Security Updates · Sep 2, 2026
References
- Pull Request issue-tracking
- Introducing Commit related
- Patch Commit patch
- FFmpeg 9.0 Backport Commit patch
- https://www.vulncheck.com/advisories/ffmpeg-uninitialized-heap-memory-read-in-screenpresso-decoder third-party-advisory