avcodec/movtextdec: Fix potential integer overflow

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2016-11-15 14:46:16 +01:00
parent 0edd569466
commit 6ea2715768
1 changed files with 1 additions and 1 deletions

View File

@ -485,7 +485,7 @@ static int mov_text_decode_frame(AVCodecContext *avctx,
m->size_var = 8;
//size_var is equal to 8 or 16 depending on the size of box
if (m->tracksize + tsmb_size > avpkt->size)
if (tsmb_size > avpkt->size - m->tracksize)
break;
for (size_t i = 0; i < box_count; i++) {