h264: Fix a possible overread in decode_nal_units()

Signed-off-by: Anton Khirnov <anton@khirnov.net>
13 years ago · bc6a3bd4a5
parent 82d05e78a6
commit bc6a3bd4a5
1 changed files with 1 additions and 1 deletions
--- a/libavcodec/h264.c
+++ b/libavcodec/h264.c
@ -3764,7 +3764,7 @@ static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size){
        int err;

        if(buf_index >= next_avc) {
-            if(buf_index >= buf_size) break;
+            if (buf_index >= buf_size - h->nal_length_size) break;
            nalsize = 0;
            for(i = 0; i < h->nal_length_size; i++)
                nalsize = (nalsize << 8) | buf[buf_index++];