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| author | Dan Carpenter <error27@gmail.com> | 2010-01-19 12:34:32 +0300 |
|---|---|---|
| committer | Tyler Hicks <tyhicks@linux.vnet.ibm.com> | 2010-01-19 22:36:06 -0600 |
| commit | ece550f51ba175c14ec3ec047815927d7386ea1f (patch) | |
| tree | 759c930b24718b3feacf149a8e4759f7725ee8e5 /fs/ecryptfs | |
| parent | 4aa25bcb7dac2d583f1557e2be2d0b598581da54 (diff) | |
| download | lwn-ece550f51ba175c14ec3ec047815927d7386ea1f.tar.gz lwn-ece550f51ba175c14ec3ec047815927d7386ea1f.zip | |
ecryptfs: use after free
The "full_alg_name" variable is used on a couple error paths, so we
shouldn't free it until the end.
Signed-off-by: Dan Carpenter <error27@gmail.com>
Cc: stable@kernel.org
Signed-off-by: Tyler Hicks <tyhicks@linux.vnet.ibm.com>
Diffstat (limited to 'fs/ecryptfs')
| -rw-r--r-- | fs/ecryptfs/crypto.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/ecryptfs/crypto.c b/fs/ecryptfs/crypto.c index fbb6e5eed697..7cb0a59f4b9d 100644 --- a/fs/ecryptfs/crypto.c +++ b/fs/ecryptfs/crypto.c @@ -1748,7 +1748,7 @@ ecryptfs_process_key_cipher(struct crypto_blkcipher **key_tfm, char *cipher_name, size_t *key_size) { char dummy_key[ECRYPTFS_MAX_KEY_BYTES]; - char *full_alg_name; + char *full_alg_name = NULL; int rc; *key_tfm = NULL; @@ -1763,7 +1763,6 @@ ecryptfs_process_key_cipher(struct crypto_blkcipher **key_tfm, if (rc) goto out; *key_tfm = crypto_alloc_blkcipher(full_alg_name, 0, CRYPTO_ALG_ASYNC); - kfree(full_alg_name); if (IS_ERR(*key_tfm)) { rc = PTR_ERR(*key_tfm); printk(KERN_ERR "Unable to allocate crypto cipher with name " @@ -1786,6 +1785,7 @@ ecryptfs_process_key_cipher(struct crypto_blkcipher **key_tfm, goto out; } out: + kfree(full_alg_name); return rc; } |