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vble: check packet size.
Fixes null pointer dereference Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
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@ -127,6 +127,11 @@ static int vble_decode_frame(AVCodecContext *avctx, void *data, int *data_size,
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if (pic->data[0])
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avctx->release_buffer(avctx, pic);
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if (avpkt->size < 4 || avpkt->size - 4 > INT_MAX/8) {
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av_log(avctx, AV_LOG_ERROR, "Invalid packet size\n");
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return AVERROR_INVALIDDATA;
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}
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/* Allocate buffer */
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if (avctx->get_buffer(avctx, pic) < 0) {
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av_log(avctx, AV_LOG_ERROR, "Could not allocate buffer.\n");
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