[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>
git-mirror · Jan 9, 2006 · 7302533 · 7302533
1 parent bcb0ad2
commit 7302533
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/crypto/api.c b/crypto/api.c
@@ -251,7 +251,7 @@ int crypto_register_alg(struct crypto_alg *alg)
 	if (alg->cra_alignmask & alg->cra_blocksize)
 		return -EINVAL;
 
-	if (alg->cra_blocksize > PAGE_SIZE)
+	if (alg->cra_blocksize > PAGE_SIZE / 8)
 		return -EINVAL;
 
 	if (alg->cra_priority < 0)