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avformat/rmdec: check that sub_packet_size fit in the packet for DEINT_ID_GENR 

Fixes use of uninitialized memory
Fixes: msan_uninit-mem_7fa8c49400d0_3923_audiosig.rm
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2014-01-06 22:58:24 +01:00
parent 71fe97a60a
commit ed1eb9602c
1 changed files with 2 additions and 0 deletions
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2
libavformat/rmdec.c
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@ -270,6 +270,8 @@ static int rm_read_audio_stream_info(AVFormatContext *s, AVIOContext *pb,
if (ast->sub_packet_size <= 0 ||
ast->sub_packet_size > ast->audio_framesize)
return AVERROR_INVALIDDATA;
if (ast->audio_framesize % ast->sub_packet_size)
return AVERROR_INVALIDDATA;
break;
case DEINT_ID_SIPR:
case DEINT_ID_INT0: