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avformat/rmdec: check against mismatching int4 interleaver parameters which would leave uninitialized holes

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Fixes use of uninitialized memory
Fixes: msan_uninit-mem_7f9cf38857c0_4582_coop.ra
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2013-12-23 18:09:58 +01:00
parent 1486ed0815
commit 4e394a98f2
1 changed files with 4 additions and 0 deletions
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4
libavformat/rmdec.c
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@ -271,6 +271,10 @@ static int rm_read_audio_stream_info(AVFormatContext *s, AVIOContext *pb,
sub_packet_h <= 1 ||
ast->coded_framesize * sub_packet_h > (2 + (sub_packet_h & 1)) * ast->audio_framesize)
return AVERROR_INVALIDDATA;
if (ast->coded_framesize * sub_packet_h != 2*ast->audio_framesize) {
avpriv_request_sample(s, "mismatching interleaver parameters");
return AVERROR_INVALIDDATA;
}
break;
case DEINT_ID_GENR:
if (ast->sub_packet_size <= 0 ||