CVE-2026-125249

HighCVSS 7.0/10Last modified Nov 10, 2026

Description

FFmpeg 7.1 through 9.0.2 contains an integer overflow in ff_vk_decode_add_slice() in libavcodec/vulkan_decode.c that miscalculates the Vulkan hwaccel bitstream buffer size. Attackers can supply a crafted stream with over 2 GiB of slice data per frame, causing memcpy() to write past a smaller pooled host-mapped buffer.

Metrics

CVSS 3.1 7.0/10CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-190

Affected software

Source: the vendor's advisory (CNA). NVD analysis pending.

Vendor	Product	Versions
FFmpeg	FFmpeg	>= 7.1, <= 9.0.2

References

Timeline

Published: Nov 9, 2026
Last modified: Nov 10, 2026
NVD status: Awaiting Analysis

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