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

Add more paranoid checks of xvmc token.

Browse Source 
Originally committed as revision 17453 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Ivan Kalvachev 2009-02-19 09:55:52 +00:00
parent 9cfc1b3a84
commit 859bb3cfee
1 changed files with 4 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
libavcodec/mpegvideo_xvmc.c
View File

@ -78,7 +78,10 @@ int ff_xvmc_field_start(MpegEncContext *s, AVCodecContext *avctx)
assert(avctx);
if (!render || render->xvmc_id != AV_XVMC_ID ||
!render->data_blocks || !render->mv_blocks) {
!render->data_blocks || !render->mv_blocks ||
(unsigned int)render->allocated_mv_blocks > INT_MAX/(64*6) ||
(unsigned int)render->allocated_data_blocks > INT_MAX/64 ||
!render->p_surface) {
av_log(avctx, AV_LOG_ERROR,
"Render token doesn't look as expected.\n");
return -1; // make sure that this is a render packet