From 192efcf76884f73c3f3d217862ac9e29afc94924 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Sat, 7 Apr 2012 17:02:36 +0200 Subject: [PATCH] h264_ps: check log2_max_frame_num for validity. Signed-off-by: Michael Niedermayer --- libavcodec/h264_ps.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/libavcodec/h264_ps.c b/libavcodec/h264_ps.c index d9ed178664..82b4e6740e 100644 --- a/libavcodec/h264_ps.c +++ b/libavcodec/h264_ps.c @@ -371,6 +371,12 @@ int ff_h264_decode_seq_parameter_set(H264Context *h){ } sps->log2_max_frame_num= get_ue_golomb(&s->gb) + 4; + if (sps->log2_max_frame_num < 4 || sps->log2_max_frame_num > 16) { + av_log(h->s.avctx, AV_LOG_ERROR, "illegal log2_max_frame_num %d\n", + sps->log2_max_frame_num); + goto fail; + } + sps->poc_type= get_ue_golomb_31(&s->gb); if(sps->poc_type == 0){ //FIXME #define