From: Michael Niedermayer <michae...@gmx.at> Fix out of bounds read. Found by: F4B3CD@STARLAB.
Signed-off-by: Vittorio Giovara <vittorio.giov...@gmail.com> --- libavcodec/mpegvideo_motion.c | 19 ++++++++----------- 1 file changed, 8 insertions(+), 11 deletions(-) diff --git a/libavcodec/mpegvideo_motion.c b/libavcodec/mpegvideo_motion.c index 8074dba..f6d9613 100644 --- a/libavcodec/mpegvideo_motion.c +++ b/libavcodec/mpegvideo_motion.c @@ -210,17 +210,14 @@ static inline int hpel_motion(MpegEncContext *s, dxy |= (motion_y & 1) << 1; src += src_y * s->linesize + src_x; - if (s->unrestricted_mv) { - if ((unsigned)src_x > FFMAX(s->h_edge_pos - (motion_x & 1) - 8, 0) || - (unsigned)src_y > FFMAX(s->v_edge_pos - (motion_y & 1) - 8, 0)) { - s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, src, - s->linesize, s->linesize, - 9, 9, - src_x, src_y, s->h_edge_pos, - s->v_edge_pos); - src = s->sc.edge_emu_buffer; - emu = 1; - } + if ((unsigned)src_x > FFMAX(s->h_edge_pos - (motion_x & 1) - 8, 0) || + (unsigned)src_y > FFMAX(s->v_edge_pos - (motion_y & 1) - 8, 0)) { + s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, src, + s->linesize, s->linesize, + 9, 9, src_x, src_y, + s->h_edge_pos, s->v_edge_pos); + src = s->sc.edge_emu_buffer; + emu = 1; } pix_op[dxy](dest, src, s->linesize, 8); return emu; -- 2.9.3 _______________________________________________ libav-devel mailing list libav-devel@libav.org https://lists.libav.org/mailman/listinfo/libav-devel