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indeo5: reject negative motion vectors 

Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org
This commit is contained in:
Luca Barbato 2013-06-30 10:35:07 +02:00
parent dd3754a488
commit 1194a41080
1 changed files with 6 additions and 0 deletions
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6
libavcodec/indeo5.c
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@ -520,6 +520,12 @@ static int decode_mb_info(IVI45DecContext *ctx, IVIBandDesc *band,
mv_x += IVI_TOSIGNED(mv_delta);
mb->mv_x = mv_x;
mb->mv_y = mv_y;
if (mv_x < 0 || mv_y < 0) {
av_log(avctx, AV_LOG_ERROR, "Invalid MV %d %d\n",
mv_x, mv_y);
mb->mv_x = mb->mv_y = 0;
return AVERROR_INVALIDDATA;
}
}
}
}