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avformat/rmdec: Check for overflow in ff_rm_read_mdpr_codecdata()

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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit 03abf55f25)

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer
2014-12-06 00:18:29 +01:00
parent a45402d4c0
commit a443b48ccf
1 changed files with 5 additions and 1 deletions
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4
libavformat/rmdec.c
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@@ -412,7 +412,11 @@ ff_rm_read_mdpr_codecdata (AVFormatContext *s, AVIOContext *pb,
skip: skip:
/* skip codec info */ /* skip codec info */
size = avio_tell(pb) - codec_pos; size = avio_tell(pb) - codec_pos;
if (codec_data_size >= size) {
avio_skip(pb, 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; return 0;
} }