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    Subject[016/105] eCryptfs: ecryptfs_keyring_auth_tok_for_sig() bug fix
    2.6.38-stable review patch.  If anyone has any objections, please let us know.

    ------------------

    From: Roberto Sassu <roberto.sassu@polito.it>

    commit 1821df040ac3cd6a57518739f345da6d50ea9d3f upstream.

    The pointer '(*auth_tok_key)' is set to NULL in case request_key()
    fails, in order to prevent its use by functions calling
    ecryptfs_keyring_auth_tok_for_sig().

    Signed-off-by: Roberto Sassu <roberto.sassu@polito.it>
    Signed-off-by: Tyler Hicks <tyhicks@linux.vnet.ibm.com>
    Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

    ---
    fs/ecryptfs/keystore.c | 1 +
    1 file changed, 1 insertion(+)

    --- a/fs/ecryptfs/keystore.c
    +++ b/fs/ecryptfs/keystore.c
    @@ -1563,6 +1563,7 @@ int ecryptfs_keyring_auth_tok_for_sig(st
    printk(KERN_ERR "Could not find key with description: [%s]\n",
    sig);
    rc = process_request_key_err(PTR_ERR(*auth_tok_key));
    + (*auth_tok_key) = NULL;
    goto out;
    }
    (*auth_tok) = ecryptfs_get_key_payload_data(*auth_tok_key);



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