Bug 2570993 (CVE-2026-125249)

Summary: CVE-2026-125249 ffmpeg: ffmpeg: Arbitrary code execution via integer overflow in Vulkan decoding
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: bbrownin
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in FFmpeg. An integer overflow in the Vulkan hardware-accelerated video decoding component causes memory buffer sizes to be miscalculated when processing video frames. By tricking a user or application into processing a crafted media stream with excessive slice data, an attacker can trigger an out-of-bounds memory write. This can lead to arbitrary code execution or an application crash resulting in a Denial of Service (DoS).
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description OSIDB Bzimport 2026-11-10 20:35:28 UTC
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.