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-rw-r--r--libavcodec/h264_ps.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/libavcodec/h264_ps.c b/libavcodec/h264_ps.c
index 261e2d2719..98d779ea3b 100644
--- a/libavcodec/h264_ps.c
+++ b/libavcodec/h264_ps.c
@@ -380,7 +380,12 @@ int ff_h264_decode_seq_parameter_set(H264Context *h){
sps->poc_type= get_ue_golomb_31(&s->gb);
if(sps->poc_type == 0){ //FIXME #define
- sps->log2_max_poc_lsb= get_ue_golomb(&s->gb) + 4;
+ unsigned t = get_ue_golomb(&s->gb);
+ if(t>12){
+ av_log(h->s.avctx, AV_LOG_ERROR, "log2_max_poc_lsb (%d) is out of range\n", t);
+ goto fail;
+ }
+ sps->log2_max_poc_lsb= t + 4;
} else if(sps->poc_type == 1){//FIXME #define
sps->delta_pic_order_always_zero_flag= get_bits1(&s->gb);
sps->offset_for_non_ref_pic= get_se_golomb(&s->gb);