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Commit 7302533a authored Jan 07, 2006 by Herbert Xu Committed by David S. Miller Jan 09, 2006

[CRYPTO] api: Require block size to be less than PAGE_SIZE/8

The cipher code path may allocate up to two blocks of data on the stack.
Therefore we need to place limits on the maximum block size.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

parent bcb0ad2b

crypto/api.c

+1 −1

Original line number	Original line	Diff line number	Diff line
	@@ -251,7 +251,7 @@ int crypto_register_alg(struct crypto_alg *alg)
	if (alg->cra_alignmask & alg->cra_blocksize)		if (alg->cra_alignmask & alg->cra_blocksize)
	return -EINVAL;		return -EINVAL;

	if (alg->cra_blocksize > PAGE_SIZE)		if (alg->cra_blocksize > PAGE_SIZE / 8)
	return -EINVAL;		return -EINVAL;

	if (alg->cra_priority < 0)		if (alg->cra_priority < 0)