# CVE-2026-64831: ffmpeg: FFmpeg versions 8.0 through 8.1.2 contains a stack buffer overflow vulnerability in the Vulkan HEVC hardware decoder...

CVE-2026-64831 is fixed in 14 products on 1 platform, first by DEBIAN-CVE-2026-64831, released July 22, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-64831
- Priority: Routine
- CVSS: n/a (Medium)
- EPSS: 0.0085
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jul 22, 2026

## Description

FFmpeg versions 8.0 through 8.1.2 contains a stack buffer overflow vulnerability in the Vulkan HEVC hardware decoder that allows remote attackers to overwrite return addresses and adjacent stack frames by supplying a crafted HEVC/H.265 bitstream. Attackers can embed a malicious vps_num_hrd_parameters value exceeding HEVC_MAX_SUB_LAYERS in any supported container format to overflow stack-allocated arrays in the vk_hevc_end_frame function, potentially achieving arbitrary code execution.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | ffmpeg Debian 14 | 7:9.0.2-1 | [DEBIAN-CVE-2026-64831](https://patchblox.com/security/data/fix/linux/debian-cve-2026-64831.md) | Jul 22, 2026 |
| Linux | ffmpeg Ubuntu 26.04.1 LTS (resolute) | 7:8.0.1-3ubuntu2+esm4 | [ffmpeg 7:8.0.1-3ubuntu2+esm4](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-ffmpeg-7-8.0.1-3ubuntu2-esm4.md) | Aug 19, 2026 |
| Linux | libavcodec-extra Ubuntu 26.04.1 LTS (resolute) | 7:8.0.1-3ubuntu2+esm4 | [libavcodec-extra 7:8.0.1-3ubuntu2+esm4](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libavcodec-extra-7-8.0.1-3ubuntu2-esm4.md) | Aug 19, 2026 |
| Linux | libavcodec-extra62 Ubuntu 26.04.1 LTS (resolute) | 7:8.0.1-3ubuntu2+esm4 | [libavcodec-extra62 7:8.0.1-3ubuntu2+esm4](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libavcodec-extra62-7-8.0.1-3ubuntu2-esm4.md) | Aug 19, 2026 |
| Linux | libavcodec62 Ubuntu 26.04.1 LTS (resolute) | 7:8.0.1-3ubuntu2+esm4 | [libavcodec62 7:8.0.1-3ubuntu2+esm4](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libavcodec62-7-8.0.1-3ubuntu2-esm4.md) | Aug 19, 2026 |
| Linux | libavdevice62 Ubuntu 26.04.1 LTS (resolute) | 7:8.0.1-3ubuntu2+esm4 | [libavdevice62 7:8.0.1-3ubuntu2+esm4](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libavdevice62-7-8.0.1-3ubuntu2-esm4.md) | Aug 19, 2026 |
| Linux | libavfilter-extra Ubuntu 26.04.1 LTS (resolute) | 7:8.0.1-3ubuntu2+esm4 | [libavfilter-extra 7:8.0.1-3ubuntu2+esm4](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libavfilter-extra-7-8.0.1-3ubuntu2-esm4.md) | Aug 19, 2026 |
| Linux | libavfilter-extra11 Ubuntu 26.04.1 LTS (resolute) | 7:8.0.1-3ubuntu2+esm4 | [libavfilter-extra11 7:8.0.1-3ubuntu2+esm4](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libavfilter-extra11-7-8.0.1-3ubuntu2-esm4.md) | Aug 19, 2026 |
| Linux | libavfilter11 Ubuntu 26.04.1 LTS (resolute) | 7:8.0.1-3ubuntu2+esm4 | [libavfilter11 7:8.0.1-3ubuntu2+esm4](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libavfilter11-7-8.0.1-3ubuntu2-esm4.md) | Aug 19, 2026 |
| Linux | libavformat-extra Ubuntu 26.04.1 LTS (resolute) | 7:8.0.1-3ubuntu2+esm4 | [libavformat-extra 7:8.0.1-3ubuntu2+esm4](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libavformat-extra-7-8.0.1-3ubuntu2-esm4.md) | Aug 19, 2026 |
| Linux | libavformat-extra62 Ubuntu 26.04.1 LTS (resolute) | 7:8.0.1-3ubuntu2+esm4 | [libavformat-extra62 7:8.0.1-3ubuntu2+esm4](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libavformat-extra62-7-8.0.1-3ubuntu2-esm4.md) | Aug 19, 2026 |
| Linux | libavformat62 Ubuntu 26.04.1 LTS (resolute) | 7:8.0.1-3ubuntu2+esm4 | [libavformat62 7:8.0.1-3ubuntu2+esm4](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libavformat62-7-8.0.1-3ubuntu2-esm4.md) | Aug 19, 2026 |
| Linux | libavutil60 Ubuntu 26.04.1 LTS (resolute) | 7:8.0.1-3ubuntu2+esm4 | [libavutil60 7:8.0.1-3ubuntu2+esm4](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libavutil60-7-8.0.1-3ubuntu2-esm4.md) | Aug 19, 2026 |
| Linux | libswresample6 Ubuntu 26.04.1 LTS (resolute) | 7:8.0.1-3ubuntu2+esm4 | [libswresample6 7:8.0.1-3ubuntu2+esm4](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libswresample6-7-8.0.1-3ubuntu2-esm4.md) | Aug 19, 2026 |
| Linux | libswscale9 Ubuntu 26.04.1 LTS (resolute) | 7:8.0.1-3ubuntu2+esm4 | [libswscale9 7:8.0.1-3ubuntu2+esm4](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libswscale9-7-8.0.1-3ubuntu2-esm4.md) | Aug 19, 2026 |

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Data as of 2026-11-09T01:18:40Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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