diff mbox

[3.8,146/152] iscsi-target: fix extract_param to handle buffer length corner case

Message ID 1386371476-2477-147-git-send-email-kamal@canonical.com
State New
Headers show

Commit Message

Kamal Mostafa Dec. 6, 2013, 11:11 p.m. UTC 
3.8.13.14 -stable review patch.  If anyone has any objections, please let me know.

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

From: Eric Seppanen <eric@purestorage.com>

commit 369653e4fb511928511b0ce81f41c812ff1f28b6 upstream.

extract_param() is called with max_length set to the total size of the
output buffer.  It's not safe to allow a parameter length equal to the
buffer size as the terminating null would be written one byte past the
end of the output buffer.

Signed-off-by: Eric Seppanen <eric@purestorage.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
 drivers/target/iscsi/iscsi_target_nego.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox

Patch

diff --git a/drivers/target/iscsi/iscsi_target_nego.c b/drivers/target/iscsi/iscsi_target_nego.c
index 9d902ae..c7f68b3 100644
--- a/drivers/target/iscsi/iscsi_target_nego.c
+++ b/drivers/target/iscsi/iscsi_target_nego.c
@@ -89,7 +89,7 @@  int extract_param(
 	if (len < 0)
 		return -1;
 
-	if (len > max_length) {
+	if (len >= max_length) {
 		pr_err("Length of input: %d exceeds max_length:"
 			" %d\n", len, max_length);
 		return -1;