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ff_mss12_decode_init: check dimensions 

Fixes assertion failure

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2013-01-24 01:25:02 +01:00
parent df39c3ce38
commit ee9151b616
1 changed files with 5 additions and 0 deletions
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5
libavcodec/mss12.c
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@ -586,6 +586,11 @@ av_cold int ff_mss12_decode_init(MSS12Context *c, int version,
avctx->coded_width, avctx->coded_height);
return AVERROR_INVALIDDATA;
}
if (avctx->coded_width < 1 || avctx->coded_height < 1) {
av_log(avctx, AV_LOG_ERROR, "Frame dimensions %dx%d too small",
avctx->coded_width, avctx->coded_height);
return AVERROR_INVALIDDATA;
}
av_log(avctx, AV_LOG_DEBUG, "Encoder version %d.%d\n",
AV_RB32(avctx->extradata + 4), AV_RB32(avctx->extradata + 8));