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| author | Herbert Xu <herbert@gondor.apana.org.au> | 2009-07-15 20:39:05 +0800 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2009-07-15 20:39:05 +0800 |
| commit | a70c522520d967844c01fa01459edc698fc54544 (patch) | |
| tree | fa132bf2be983b3300340779c155bc8ff95708b0 /crypto/ahash.c | |
| parent | faae890883624e14a328863eafabf54a36698774 (diff) | |
| download | lwn-a70c522520d967844c01fa01459edc698fc54544.tar.gz lwn-a70c522520d967844c01fa01459edc698fc54544.zip | |
crypto: ahash - Fix setkey crash
When the alignment check was made unconditional for ahash we
may end up crashing on shash algorithms because we're always
calling alg->setkey instead of tfm->setkey.
This patch fixes it.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto/ahash.c')
| -rw-r--r-- | crypto/ahash.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/crypto/ahash.c b/crypto/ahash.c index ac0798d2824e..28a33d06c274 100644 --- a/crypto/ahash.c +++ b/crypto/ahash.c @@ -145,7 +145,6 @@ int crypto_hash_walk_first_compat(struct hash_desc *hdesc, static int ahash_setkey_unaligned(struct crypto_ahash *tfm, const u8 *key, unsigned int keylen) { - struct ahash_alg *ahash = crypto_ahash_alg(tfm); unsigned long alignmask = crypto_ahash_alignmask(tfm); int ret; u8 *buffer, *alignbuffer; @@ -158,7 +157,7 @@ static int ahash_setkey_unaligned(struct crypto_ahash *tfm, const u8 *key, alignbuffer = (u8 *)ALIGN((unsigned long)buffer, alignmask + 1); memcpy(alignbuffer, key, keylen); - ret = ahash->setkey(tfm, alignbuffer, keylen); + ret = tfm->setkey(tfm, alignbuffer, keylen); kzfree(buffer); return ret; } @@ -166,13 +165,12 @@ static int ahash_setkey_unaligned(struct crypto_ahash *tfm, const u8 *key, int crypto_ahash_setkey(struct crypto_ahash *tfm, const u8 *key, unsigned int keylen) { - struct ahash_alg *ahash = crypto_ahash_alg(tfm); unsigned long alignmask = crypto_ahash_alignmask(tfm); if ((unsigned long)key & alignmask) return ahash_setkey_unaligned(tfm, key, keylen); - return ahash->setkey(tfm, key, keylen); + return tfm->setkey(tfm, key, keylen); } EXPORT_SYMBOL_GPL(crypto_ahash_setkey); |