virtualenv/FFmpeg
1
0
Fork 0
mirror of https://github.com/FFmpeg/FFmpeg.git synced 2024-12-23 12:43:46 +02:00
Code Issues Releases Activity

h264: prevent overreads in intra PCM decoding.

Browse Source 
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org
This commit is contained in:
Ronald S. Bultje 2012-02-28 18:48:27 -08:00
parent f240df6a74
commit d1604b3de9
1 changed files with 2 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
libavcodec/h264_cabac.c
View File

@ -1996,6 +1996,8 @@ decode_intra_mb:
} }
// The pixels are stored in the same order as levels in h->mb array. // The pixels are stored in the same order as levels in h->mb array.
if ((int) (h->cabac.bytestream_end - ptr) < mb_size)
return -1;
memcpy(h->mb, ptr, mb_size); ptr+=mb_size; memcpy(h->mb, ptr, mb_size); ptr+=mb_size;
ff_init_cabac_decoder(&h->cabac, ptr, h->cabac.bytestream_end - ptr); ff_init_cabac_decoder(&h->cabac, ptr, h->cabac.bytestream_end - ptr);