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sanm: add forgotten check for decoded_size in old_codec37()
Fixes out of array accesses Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
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@ -417,6 +417,11 @@ static int old_codec37(SANMVideoContext *ctx, int top,
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flags = bytestream2_get_byte(&ctx->gb);
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bytestream2_skip(&ctx->gb, 3);
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if (decoded_size > height * stride - left - top * stride) {
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decoded_size = height * stride - left - top * stride;
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av_log(ctx->avctx, AV_LOG_WARNING, "decoded size is too large\n");
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}
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ctx->rotate_code = 0;
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if (((seq & 1) || !(flags & 1)) && (compr && compr != 2))
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