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avformat/rmdec: Check for overflow in ff_rm_read_mdpr_codecdata() 

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2014-12-06 00:18:29 +01:00
parent 50f9de59a0
commit 03abf55f25
1 changed files with 5 additions and 1 deletions
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6
libavformat/rmdec.c
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@ -414,7 +414,11 @@ int ff_rm_read_mdpr_codecdata(AVFormatContext *s, AVIOContext *pb,
skip:
/* skip codec info */
size = avio_tell(pb) - codec_pos;
avio_skip(pb, codec_data_size - size);
if (codec_data_size >= size) {
avio_skip(pb, codec_data_size - size);
} else {
av_log(s, AV_LOG_WARNING, "codec_data_size %u < size %d\n", codec_data_size, size);
}
return 0;
}