diff options
| author | Michael Niedermayer <michaelni@gmx.at> | 2009-09-23 09:58:44 +0000 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2009-09-23 09:58:44 +0000 |
| commit | 7bf3d0c44e06860d2ae26dc7b7764d64beabb727 (patch) | |
| tree | b66078b0b4fc114ec22a2f33cfb753b40963eec0 | |
| parent | 7d507ceb79a4869e1e626d425451cc104b75051e (diff) | |
Check num_units_in_tick/time_scale to be valid and within the range we support.
based on a patch by chrome
Originally committed as revision 19979 to svn://svn.ffmpeg.org/ffmpeg/trunk
| -rw-r--r-- | libavcodec/h264.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/libavcodec/h264.c b/libavcodec/h264.c index 20ad778f29..31bd4a6af9 100644 --- a/libavcodec/h264.c +++ b/libavcodec/h264.c @@ -7087,6 +7087,10 @@ static inline int decode_vui_parameters(H264Context *h, SPS *sps){ if(sps->timing_info_present_flag){ sps->num_units_in_tick = get_bits_long(&s->gb, 32); sps->time_scale = get_bits_long(&s->gb, 32); + if(sps->num_units_in_tick-1 > 0x7FFFFFFEU || sps->time_scale-1 > 0x7FFFFFFEU){ + av_log(h->s.avctx, AV_LOG_ERROR, "time_scale/num_units_in_tick inavlid or unsupported (%d/%d)\n", sps->time_scale, sps->num_units_in_tick); + return -1; + } sps->fixed_frame_rate_flag = get_bits1(&s->gb); } |