commit 7800007c1e2d42cd4120b87b0ba3f3480f17f30a
author Patrick McHardy <kaber@trash.net> Wed May 03 23:20:27 2006 -0700
committer David S. Miller <davem@davemloft.net> Wed May 03 23:20:27 2006 -0700
tree 831514416c91adcf7bdf87b6c6fd8d7660e1883e
parent 7582e9d17edbabab6cbe59467c5d1b5e8c04fca8

[NETFILTER]: x_tables: don't use __copy_{from,to}_user on unchecked memory in compat layer

Noticed by Linus Torvalds <torvalds@osdl.org>

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/netfilter/x_tables.c

diff --git a/net/netfilter/x_tables.c b/net/netfilter/x_tables.c
index 17abf60f..99293c6 100644
--- a/net/netfilter/x_tables.c
+++ b/net/netfilter/x_tables.c
@@ -289,7 +289,7 @@
 		case COMPAT_TO_USER:
 			pm = (struct xt_entry_match *)match;
 			msize = pm->u.user.match_size;
-			if (__copy_to_user(*dstptr, pm, msize)) {
+			if (copy_to_user(*dstptr, pm, msize)) {
 				ret = -EFAULT;
 				break;
 			}
@@ -366,7 +366,7 @@
 		case COMPAT_TO_USER:
 			pt = (struct xt_entry_target *)target;
 			tsize = pt->u.user.target_size;
-			if (__copy_to_user(*dstptr, pt, tsize)) {
+			if (copy_to_user(*dstptr, pt, tsize)) {
 				ret = -EFAULT;
 				break;
 			}