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h264_ps: check log2_max_frame_num for validity. 

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2012-04-07 17:02:36 +02:00
parent 2d0b4bc4cf
commit 192efcf768
1 changed files with 6 additions and 0 deletions
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6
libavcodec/h264_ps.c
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@ -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