ffmpeg: FFmpeg's RASC video decoder (decode_dlta in libavcodec/rasc.c) performs 32-bit reads and writes at the row cursor bef...
CVE-2026-58049 is fixed in 18 products on 1 platform, first by DEBIAN-CVE-2026-58049, released June 28, 2026. It is not reported as exploited. Patch Radar priority: Routine.
FFmpeg's RASC video decoder (decode_dlta in libavcodec/rasc.c) performs 32-bit reads and writes at the row cursor before the NEXT_LINE row-boundary check and validates the DLTA region in pixel rather than byte units, so a DLTA run on a PAL8 frame can access several bytes past the row allocation. A crafted media stream using the RASC FourCC, decoded by libavcodec, triggers a bitstream-controlled out-of-bounds heap write and adjacent out-of-bounds read, leading to memory corruption.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| ffmpeg · Debian 14 | 7:9.0.2-1 | DEBIAN-CVE-2026-58049 | Jun 28, 2026 |
| ffmpeg · Ubuntu 20.04 LTS (focal) | 7:4.2.7-0ubuntu0.1+esm17 | ffmpeg 7:4.2.7-0ubuntu0.1+esm17 | Aug 6, 2026 |
| ffmpeg · Ubuntu 22.04.1 LTS (jammy) | 7:4.4.2-0ubuntu0.22.04.1+esm16 | ffmpeg 7:4.4.2-0ubuntu0.22.04.1+esm16 | Aug 6, 2026 |
| ffmpeg-4 · sles 15.7 | 4.4.8-150600.13.55.1 | SUSE-SU-2026:4149-1 | Sep 14, 2026 |
| ffmpeg-7 · opensuse-leap 16.0 | 7.1.5-160000.1.1 | OPENSUSE-SU-2026:21877-1 | Sep 18, 2026 |
| libavcodec-extra · Ubuntu 20.04 LTS (focal) | 7:4.2.7-0ubuntu0.1+esm17 | libavcodec-extra 7:4.2.7-0ubuntu0.1+esm17 | Aug 6, 2026 |
| libavcodec-extra · Ubuntu 22.04.1 LTS (jammy) | 7:4.4.2-0ubuntu0.22.04.1+esm16 | libavcodec-extra 7:4.4.2-0ubuntu0.22.04.1+esm16 | Aug 6, 2026 |
| libavcodec-extra58 · Ubuntu 20.04 LTS (focal) | 7:4.2.7-0ubuntu0.1+esm17 | libavcodec-extra58 7:4.2.7-0ubuntu0.1+esm17 | Aug 6, 2026 |
| libavcodec-extra58 · Ubuntu 22.04.1 LTS (jammy) | 7:4.4.2-0ubuntu0.22.04.1+esm16 | libavcodec-extra58 7:4.4.2-0ubuntu0.22.04.1+esm16 | Aug 6, 2026 |
| libavcodec58 · Ubuntu 20.04 LTS (focal) | 7:4.2.7-0ubuntu0.1+esm17 | libavcodec58 7:4.2.7-0ubuntu0.1+esm17 | Aug 6, 2026 |
| libavcodec58 · Ubuntu 22.04.1 LTS (jammy) | 7:4.4.2-0ubuntu0.22.04.1+esm16 | libavcodec58 7:4.4.2-0ubuntu0.22.04.1+esm16 | Aug 6, 2026 |
| libavdevice58 · Ubuntu 20.04 LTS (focal) | 7:4.2.7-0ubuntu0.1+esm17 | libavdevice58 7:4.2.7-0ubuntu0.1+esm17 | Aug 6, 2026 |
| libavdevice58 · Ubuntu 22.04.1 LTS (jammy) | 7:4.4.2-0ubuntu0.22.04.1+esm16 | libavdevice58 7:4.4.2-0ubuntu0.22.04.1+esm16 | Aug 6, 2026 |
| libavfilter-extra · Ubuntu 20.04 LTS (focal) | 7:4.2.7-0ubuntu0.1+esm17 | libavfilter-extra 7:4.2.7-0ubuntu0.1+esm17 | Aug 6, 2026 |
| libavfilter-extra · Ubuntu 22.04.1 LTS (jammy) | 7:4.4.2-0ubuntu0.22.04.1+esm16 | libavfilter-extra 7:4.4.2-0ubuntu0.22.04.1+esm16 | Aug 6, 2026 |
| libavfilter-extra7 · Ubuntu 20.04 LTS (focal) | 7:4.2.7-0ubuntu0.1+esm17 | libavfilter-extra7 7:4.2.7-0ubuntu0.1+esm17 | Aug 6, 2026 |
| libavfilter-extra7 · Ubuntu 22.04.1 LTS (jammy) | 7:4.4.2-0ubuntu0.22.04.1+esm16 | libavfilter-extra7 7:4.4.2-0ubuntu0.22.04.1+esm16 | Aug 6, 2026 |
| libavfilter7 · Ubuntu 20.04 LTS (focal) | 7:4.2.7-0ubuntu0.1+esm17 | libavfilter7 7:4.2.7-0ubuntu0.1+esm17 | Aug 6, 2026 |
| libavfilter7 · Ubuntu 22.04.1 LTS (jammy) | 7:4.4.2-0ubuntu0.22.04.1+esm16 | libavfilter7 7:4.4.2-0ubuntu0.22.04.1+esm16 | Aug 6, 2026 |
| libavformat-extra · Ubuntu 22.04.1 LTS (jammy) | 7:4.4.2-0ubuntu0.22.04.1+esm16 | libavformat-extra 7:4.4.2-0ubuntu0.22.04.1+esm16 | Aug 6, 2026 |
| libavformat-extra58 · Ubuntu 22.04.1 LTS (jammy) | 7:4.4.2-0ubuntu0.22.04.1+esm16 | libavformat-extra58 7:4.4.2-0ubuntu0.22.04.1+esm16 | Aug 6, 2026 |
| libavformat58 · Ubuntu 20.04 LTS (focal) | 7:4.2.7-0ubuntu0.1+esm17 | libavformat58 7:4.2.7-0ubuntu0.1+esm17 | Aug 6, 2026 |
| libavformat58 · Ubuntu 22.04.1 LTS (jammy) | 7:4.4.2-0ubuntu0.22.04.1+esm16 | libavformat58 7:4.4.2-0ubuntu0.22.04.1+esm16 | Aug 6, 2026 |
| libavresample4 · Ubuntu 20.04 LTS (focal) | 7:4.2.7-0ubuntu0.1+esm17 | libavresample4 7:4.2.7-0ubuntu0.1+esm17 | Aug 6, 2026 |
| libavutil56 · Ubuntu 20.04 LTS (focal) | 7:4.2.7-0ubuntu0.1+esm17 | libavutil56 7:4.2.7-0ubuntu0.1+esm17 | Aug 6, 2026 |
| libavutil56 · Ubuntu 22.04.1 LTS (jammy) | 7:4.4.2-0ubuntu0.22.04.1+esm16 | libavutil56 7:4.4.2-0ubuntu0.22.04.1+esm16 | Aug 6, 2026 |
| libpostproc55 · Ubuntu 20.04 LTS (focal) | 7:4.2.7-0ubuntu0.1+esm17 | libpostproc55 7:4.2.7-0ubuntu0.1+esm17 | Aug 6, 2026 |
| libpostproc55 · Ubuntu 22.04.1 LTS (jammy) | 7:4.4.2-0ubuntu0.22.04.1+esm16 | libpostproc55 7:4.4.2-0ubuntu0.22.04.1+esm16 | Aug 6, 2026 |
| libswresample3 · Ubuntu 20.04 LTS (focal) | 7:4.2.7-0ubuntu0.1+esm17 | libswresample3 7:4.2.7-0ubuntu0.1+esm17 | Aug 6, 2026 |
| libswresample3 · Ubuntu 22.04.1 LTS (jammy) | 7:4.4.2-0ubuntu0.22.04.1+esm16 | libswresample3 7:4.4.2-0ubuntu0.22.04.1+esm16 | Aug 6, 2026 |
| libswscale5 · Ubuntu 20.04 LTS (focal) | 7:4.2.7-0ubuntu0.1+esm17 | libswscale5 7:4.2.7-0ubuntu0.1+esm17 | Aug 6, 2026 |
| libswscale5 · Ubuntu 22.04.1 LTS (jammy) | 7:4.4.2-0ubuntu0.22.04.1+esm16 | libswscale5 7:4.4.2-0ubuntu0.22.04.1+esm16 | Aug 6, 2026 |
Patch Radar data is free to use with attribution. Terms and how to credit it.
Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.