High severity8.8NVD Advisory· Published Jul 22, 2026· Updated Jul 28, 2026
CVE-2026-64831
CVE-2026-64831
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
6- osv-coords4 versionspkg:apk/chainguard/ffmpeg-8.0pkg:apk/chainguard/ffmpeg-8.1pkg:apk/wolfi/ffmpeg-8.0pkg:apk/wolfi/ffmpeg-8.1
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Patches
Vulnerability mechanics
References
3- code.ffmpeg.org/FFmpeg/FFmpeg/commit/92737390dc133daadce47dd7d2ec8ef3d9ebcbednvdPatch
- code.ffmpeg.org/FFmpeg/FFmpeg/pulls/23665nvdIssue TrackingPatch
- www.vulncheck.com/advisories/ffmpeg-stack-buffer-overflow-in-vulkan-hevc-decodernvdThird Party Advisory
News mentions
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