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| author | Herbert Xu <herbert@gondor.apana.org.au> | 2006-01-07 16:24:15 +1100 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2006-01-09 14:15:58 -0800 |
| commit | 7302533aac2df321b76e8a113e5cfa529c825b09 (patch) | |
| tree | 9499633f4d5b6eeecc41ac50cca7fcf5310efd9e /crypto/api.c | |
| parent | bcb0ad2b34daade529ce1f38eede0ea8b7309535 (diff) | |
| download | lwn-7302533aac2df321b76e8a113e5cfa529c825b09.tar.gz lwn-7302533aac2df321b76e8a113e5cfa529c825b09.zip | |
[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>
Diffstat (limited to 'crypto/api.c')
| -rw-r--r-- | crypto/api.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/crypto/api.c b/crypto/api.c index 2715afdf678c..e26156f71839 100644 --- 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) |