The VideoFramePool::PoolImpl::CreateFrame function in media/base/video_frame_pool.cc in Google Chrome before 47.0.2526.73 does not initialize memory for a video-frame data structure, which might allow remote attackers to cause a denial of service (out-of-bounds memory access) or possibly have unspecified other impact by leveraging improper interaction with the vp3_h_loop_filter_c function in libavcodec/vp3dsp.c in FFmpeg.
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.