Commit 38919598 authored Aug 26, 2009 by Tyler Hicks

eCryptfs: Validate global auth tok keys

When searching through the global authentication tokens for a given key
signature, verify that a matching key has not been revoked and has not
expired.  This allows the `keyctl revoke` command to be properly used on
keys in use by eCryptfs.

Acked-by: Serge Hallyn <serue@us.ibm.com>
Cc: ecryptfs-devel@lists.launchpad.net
Cc: stable <stable@kernel.org>
Signed-off-by: Tyler Hicks <tyhicks@linux.vnet.ibm.com>

parent df6ad33b

fs/ecryptfs/keystore.c

+3 −1

Original line number	Diff line number	Diff line
		@@ -416,6 +416,8 @@ ecryptfs_find_global_auth_tok_for_sig(
		&mount_crypt_stat->global_auth_tok_list,
		mount_crypt_stat_list) {
		if (memcmp(walker->sig, sig, ECRYPTFS_SIG_SIZE_HEX) == 0) {
		rc = key_validate(walker->global_auth_tok_key);
		if (!rc)
		(*global_auth_tok) = walker;
		goto out;
		}