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[CRYPTO] api: fix writting into unallocated memory in setkey_aligned

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setkey_unaligned() commited in ca7c39385c
overwrites unallocated memory in the following memset() because
I used the wrong buffer length.

Signed-off-by: Sebastian Siewior <sebastian@breakpoint.cc>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Sebastian Siewior 2007-08-03 20:33:47 +08:00 committed by Herbert Xu
parent d4ac2477fa
commit 0681717678
4 changed files with 4 additions and 4 deletions
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2
crypto/ablkcipher.c
View file

@ -35,7 +35,7 @@ static int setkey_unaligned(struct crypto_ablkcipher *tfm, const u8 *key, unsign
alignbuffer = (u8 *)ALIGN((unsigned long)buffer, alignmask + 1); alignbuffer = (u8 *)ALIGN((unsigned long)buffer, alignmask + 1);
memcpy(alignbuffer, key, keylen); memcpy(alignbuffer, key, keylen);
ret = cipher->setkey(tfm, alignbuffer, keylen); ret = cipher->setkey(tfm, alignbuffer, keylen);
memset(alignbuffer, 0, absize); memset(alignbuffer, 0, keylen);
kfree(buffer); kfree(buffer);
return ret; return ret;
} }

2
crypto/blkcipher.c
View file

@ -352,7 +352,7 @@ static int setkey_unaligned(struct crypto_tfm *tfm, const u8 *key, unsigned int
alignbuffer = (u8 *)ALIGN((unsigned long)buffer, alignmask + 1); alignbuffer = (u8 *)ALIGN((unsigned long)buffer, alignmask + 1);
memcpy(alignbuffer, key, keylen); memcpy(alignbuffer, key, keylen);
ret = cipher->setkey(tfm, alignbuffer, keylen); ret = cipher->setkey(tfm, alignbuffer, keylen);
memset(alignbuffer, 0, absize); memset(alignbuffer, 0, keylen);
kfree(buffer); kfree(buffer);
return ret; return ret;
} }

2
crypto/cipher.c
View file

@ -36,7 +36,7 @@ static int setkey_unaligned(struct crypto_tfm *tfm, const u8 *key, unsigned int
alignbuffer = (u8 *)ALIGN((unsigned long)buffer, alignmask + 1); alignbuffer = (u8 *)ALIGN((unsigned long)buffer, alignmask + 1);
memcpy(alignbuffer, key, keylen); memcpy(alignbuffer, key, keylen);
ret = cia->cia_setkey(tfm, alignbuffer, keylen); ret = cia->cia_setkey(tfm, alignbuffer, keylen);
memset(alignbuffer, 0, absize); memset(alignbuffer, 0, keylen);
kfree(buffer); kfree(buffer);
return ret; return ret;

2
crypto/hash.c
View file

@ -40,7 +40,7 @@ static int hash_setkey_unaligned(struct crypto_hash *crt, const u8 *key,
alignbuffer = (u8 *)ALIGN((unsigned long)buffer, alignmask + 1); alignbuffer = (u8 *)ALIGN((unsigned long)buffer, alignmask + 1);
memcpy(alignbuffer, key, keylen); memcpy(alignbuffer, key, keylen);
ret = alg->setkey(crt, alignbuffer, keylen); ret = alg->setkey(crt, alignbuffer, keylen);
memset(alignbuffer, 0, absize); memset(alignbuffer, 0, keylen);
kfree(buffer); kfree(buffer);
return ret; return ret;
} }