[076/251] iscsi-target: Fix tfc_tpg_nacl_auth_cit configfs length overflow

[Steven Rostedt]

3.6.11.9-rc1 stable review patch.
If anyone has any objections, please let me know.

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

From: =?UTF-8?q?J=C3=B6rn=20Engel?= <joern@xxxxxxxxx>

[ Upstream commit 0fbfc46fb0b2f543a8b539e94c6c293ebc0b05a6 ]

This patch fixes a potential buffer overflow while processing
iscsi_node_auth input for configfs attributes within NodeACL
tfc_tpg_nacl_auth_cit context.

Signed-off-by: Joern Engel <joern@xxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Nicholas Bellinger <nab@xxxxxxxxxxxxxxx>
Signed-off-by: Steven Rostedt <rostedt@xxxxxxxxxxx>
---
 drivers/target/iscsi/iscsi_target_configfs.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/target/iscsi/iscsi_target_configfs.c b/drivers/target/iscsi/iscsi_target_configfs.c
index a7b25e7..73adddc 100644
--- a/drivers/target/iscsi/iscsi_target_configfs.c
+++ b/drivers/target/iscsi/iscsi_target_configfs.c
@@ -393,7 +393,7 @@ static ssize_t __iscsi_##prefix##_store_##name(				\
 	if (!capable(CAP_SYS_ADMIN))					\
 		return -EPERM;						\
 									\
-	snprintf(auth->name, PAGE_SIZE, "%s", page);			\
+	snprintf(auth->name, sizeof(auth->name), "%s", page);		\
 	if (!strncmp("NULL", auth->name, 4))				\
 		auth->naf_flags &= ~flags;				\
 	else								\
-- 
1.7.10.4


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