# CVE-2026-70629: ffmpeg: FFmpeg versions from 3.0 up to, but not including, 9.0 contain an uninitialized heap memory read vulnerability in the...

CVE-2026-70629 is fixed in 18 products on 1 platform, first by ffmpeg 7:4.2.7-0ubuntu0.1+esm17, released August 6, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-70629
- Priority: Routine
- CVSS: n/a (Medium)
- EPSS: 0.0018
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Aug 6, 2026

## Description

FFmpeg versions from 3.0 up to, but not including, 9.0 contain an uninitialized heap memory read vulnerability in the native RSCC decoder (libavcodec/rscc.c) that allows attackers to disclose heap memory contents by supplying a crafted video file with a compressed tile that decompresses fewer bytes than the declared tile geometry requires. When rscc_decode_frame() calls av_image_copy_plane() without validating the decompressed byte count against the tile dimensions, the unwritten suffix of the persistent intermediate buffer ctx->inflated_buf is copied into the decoded frame, potentially exposing data from prior heap allocations or previous decoded frames in persistent decoding services.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | ffmpeg Debian 14 | 7:9.0.2-1 | [DEBIAN-CVE-2026-70629](https://patchblox.com/security/data/fix/linux/debian-cve-2026-70629.md) | Aug 6, 2026 |
| Linux | ffmpeg Ubuntu 20.04 LTS (focal) | 7:4.2.7-0ubuntu0.1+esm17 | [ffmpeg 7:4.2.7-0ubuntu0.1+esm17](https://patchblox.com/security/data/fix/linux/ubuntu-focal-ffmpeg-7-4.2.7-0ubuntu0.1-esm17.md) | Aug 6, 2026 |
| Linux | 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](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-ffmpeg-7-4.4.2-0ubuntu0.22.04.1-esm16.md) | Aug 6, 2026 |
| Linux | ffmpeg-4 sles 15.7 | 4.4.8-150600.13.55.1 | [SUSE-SU-2026:4149-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-4149-1.md) | Sep 14, 2026 |
| Linux | ffmpeg-7 opensuse-leap 16.0 | 7.1.5-160000.1.1 | [OPENSUSE-SU-2026:21877-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21877-1.md) | Sep 18, 2026 |
| Linux | libavcodec-extra Ubuntu 20.04 LTS (focal) | 7:4.2.7-0ubuntu0.1+esm17 | [libavcodec-extra 7:4.2.7-0ubuntu0.1+esm17](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libavcodec-extra-7-4.2.7-0ubuntu0.1-esm17.md) | Aug 6, 2026 |
| Linux | 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](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libavcodec-extra-7-4.4.2-0ubuntu0.22.04.1-esm16.md) | Aug 6, 2026 |
| Linux | libavcodec-extra58 Ubuntu 20.04 LTS (focal) | 7:4.2.7-0ubuntu0.1+esm17 | [libavcodec-extra58 7:4.2.7-0ubuntu0.1+esm17](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libavcodec-extra58-7-4.2.7-0ubuntu0.1-esm17.md) | Aug 6, 2026 |
| Linux | 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](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libavcodec-extra58-7-4.4.2-0ubuntu0.22.04.1-esm16.md) | Aug 6, 2026 |
| Linux | libavcodec58 Ubuntu 20.04 LTS (focal) | 7:4.2.7-0ubuntu0.1+esm17 | [libavcodec58 7:4.2.7-0ubuntu0.1+esm17](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libavcodec58-7-4.2.7-0ubuntu0.1-esm17.md) | Aug 6, 2026 |
| Linux | 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](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libavcodec58-7-4.4.2-0ubuntu0.22.04.1-esm16.md) | Aug 6, 2026 |
| Linux | libavdevice58 Ubuntu 20.04 LTS (focal) | 7:4.2.7-0ubuntu0.1+esm17 | [libavdevice58 7:4.2.7-0ubuntu0.1+esm17](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libavdevice58-7-4.2.7-0ubuntu0.1-esm17.md) | Aug 6, 2026 |
| Linux | 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](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libavdevice58-7-4.4.2-0ubuntu0.22.04.1-esm16.md) | Aug 6, 2026 |
| Linux | libavfilter-extra Ubuntu 20.04 LTS (focal) | 7:4.2.7-0ubuntu0.1+esm17 | [libavfilter-extra 7:4.2.7-0ubuntu0.1+esm17](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libavfilter-extra-7-4.2.7-0ubuntu0.1-esm17.md) | Aug 6, 2026 |
| Linux | 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](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libavfilter-extra-7-4.4.2-0ubuntu0.22.04.1-esm16.md) | Aug 6, 2026 |
| Linux | libavfilter-extra7 Ubuntu 20.04 LTS (focal) | 7:4.2.7-0ubuntu0.1+esm17 | [libavfilter-extra7 7:4.2.7-0ubuntu0.1+esm17](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libavfilter-extra7-7-4.2.7-0ubuntu0.1-esm17.md) | Aug 6, 2026 |
| Linux | 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](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libavfilter-extra7-7-4.4.2-0ubuntu0.22.04.1-esm16.md) | Aug 6, 2026 |
| Linux | libavfilter7 Ubuntu 20.04 LTS (focal) | 7:4.2.7-0ubuntu0.1+esm17 | [libavfilter7 7:4.2.7-0ubuntu0.1+esm17](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libavfilter7-7-4.2.7-0ubuntu0.1-esm17.md) | Aug 6, 2026 |
| Linux | 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](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libavfilter7-7-4.4.2-0ubuntu0.22.04.1-esm16.md) | Aug 6, 2026 |
| Linux | 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](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libavformat-extra-7-4.4.2-0ubuntu0.22.04.1-esm16.md) | Aug 6, 2026 |
| Linux | 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](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libavformat-extra58-7-4.4.2-0ubuntu0.22.04.1-esm16.md) | Aug 6, 2026 |
| Linux | libavformat58 Ubuntu 20.04 LTS (focal) | 7:4.2.7-0ubuntu0.1+esm17 | [libavformat58 7:4.2.7-0ubuntu0.1+esm17](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libavformat58-7-4.2.7-0ubuntu0.1-esm17.md) | Aug 6, 2026 |
| Linux | 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](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libavformat58-7-4.4.2-0ubuntu0.22.04.1-esm16.md) | Aug 6, 2026 |
| Linux | libavresample4 Ubuntu 20.04 LTS (focal) | 7:4.2.7-0ubuntu0.1+esm17 | [libavresample4 7:4.2.7-0ubuntu0.1+esm17](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libavresample4-7-4.2.7-0ubuntu0.1-esm17.md) | Aug 6, 2026 |
| Linux | libavutil56 Ubuntu 20.04 LTS (focal) | 7:4.2.7-0ubuntu0.1+esm17 | [libavutil56 7:4.2.7-0ubuntu0.1+esm17](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libavutil56-7-4.2.7-0ubuntu0.1-esm17.md) | Aug 6, 2026 |
| Linux | 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](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libavutil56-7-4.4.2-0ubuntu0.22.04.1-esm16.md) | Aug 6, 2026 |
| Linux | libpostproc55 Ubuntu 20.04 LTS (focal) | 7:4.2.7-0ubuntu0.1+esm17 | [libpostproc55 7:4.2.7-0ubuntu0.1+esm17](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libpostproc55-7-4.2.7-0ubuntu0.1-esm17.md) | Aug 6, 2026 |
| Linux | 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](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libpostproc55-7-4.4.2-0ubuntu0.22.04.1-esm16.md) | Aug 6, 2026 |
| Linux | libswresample3 Ubuntu 20.04 LTS (focal) | 7:4.2.7-0ubuntu0.1+esm17 | [libswresample3 7:4.2.7-0ubuntu0.1+esm17](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libswresample3-7-4.2.7-0ubuntu0.1-esm17.md) | Aug 6, 2026 |
| Linux | 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](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libswresample3-7-4.4.2-0ubuntu0.22.04.1-esm16.md) | Aug 6, 2026 |
| Linux | libswscale5 Ubuntu 20.04 LTS (focal) | 7:4.2.7-0ubuntu0.1+esm17 | [libswscale5 7:4.2.7-0ubuntu0.1+esm17](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libswscale5-7-4.2.7-0ubuntu0.1-esm17.md) | Aug 6, 2026 |
| Linux | 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](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libswscale5-7-4.4.2-0ubuntu0.22.04.1-esm16.md) | Aug 6, 2026 |

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