FFmpeg n6.1.1 has an Out-of-bounds Read via libavcodec/ppc/vp8dsp_altivec.c, static const vec_s8 h_subpel_filters_outerReferenceshttps://github.com/ffmpeg/ffmpeg/commit/09e6840cf7a3ee07a73c3ae88a020bf27ca1a667https://github.com/FFmpeg/FFmpeg/blob/n6.1.1/libavcodec/ppc/vp8dsp_altivec.c#L53https://gist.github.com/1047524396/9754a44845578358f6a403447c458ca4
