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-rw-r--r--libavcodec/h264.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/h264.c b/libavcodec/h264.c
index b5bd0a8a71..40dbb96c90 100644
--- a/libavcodec/h264.c
+++ b/libavcodec/h264.c
@@ -8122,7 +8122,7 @@ static int decode_nal_units(H264Context *h, uint8_t *buf, int buf_size){
nalsize = 0;
for(i = 0; i < h->nal_length_size; i++)
nalsize = (nalsize << 8) | buf[buf_index++];
- if(nalsize <= 1 || nalsize > buf_size){
+ if(nalsize <= 1 || (nalsize+buf_index > buf_size)){
if(nalsize == 1){
buf_index++;
continue;