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avformat/utils: check for overflow before reallocating side data

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This makes av_stream_add_side_data() consistent with av_packet_add_side_data().

Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: James Almer <jamrial@gmail.com>
This commit is contained in:
James Almer 2016-11-19 14:33:10 -03:00
parent 2343f23e4d
commit 0ffea35657
1 changed files with 4 additions and 1 deletions
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5
libavformat/utils.c
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@ -5121,7 +5121,10 @@ int av_stream_add_side_data(AVStream *st, enum AVPacketSideDataType type,
}
}
tmp = av_realloc_array(st->side_data, st->nb_side_data + 1, sizeof(*tmp));
if ((unsigned)st->nb_side_data + 1 >= INT_MAX / sizeof(*st->side_data))
return AVERROR(ERANGE);
tmp = av_realloc(st->side_data, st->nb_side_data + 1 * sizeof(*tmp));
if (!tmp) {
return AVERROR(ENOMEM);
}