[PATCH] WE-22 : prevent information leak on 64 bit

 	Johannes Berg discovered that kernel space was leaking to
userspace on 64 bit platform. He made a first patch to fix that. This
is an improved version of his patch.

Signed-off-by: Jean Tourrilhes <jt@hpl.hp.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 18 insertions, 3 deletions

diff --git a/include/linux/wireless.h b/include/linux/wireless.h
index 447c52beb691..48759b2f57d7 100644
--- a/include/linux/wireless.h
+++ b/include/linux/wireless.h
@@ -1,10 +1,10 @@
 /*
  * This file define a set of standard wireless extensions
  *
- * Version :    21      14.3.06
+ * Version :    22      16.3.07
  *
  * Authors :    Jean Tourrilhes - HPL - <jt@hpl.hp.com>
- * Copyright (c) 1997-2006 Jean Tourrilhes, All Rights Reserved.
+ * Copyright (c) 1997-2007 Jean Tourrilhes, All Rights Reserved.
  */
 
 #ifndef _LINUX_WIRELESS_H
@@ -85,7 +85,7 @@
  * (there is some stuff that will be added in the future...)
  * I just plan to increment with each new version.
  */
-#define WIRELESS_EXT    21
+#define WIRELESS_EXT    22
 
 /*
  * Changes :
@@ -221,6 +221,10 @@
  *      - Add IW_RETRY_SHORT/IW_RETRY_LONG retry modifiers
  *      - Power/Retry relative values no longer * 100000
  *      - Add explicit flag to tell stats are in 802.11k RCPI : IW_QUAL_RCPI
+ *
+ * V21 to V22
+ * ----------
+ *      - Prevent leaking of kernel space in stream on 64 bits.
  */
 
 /**************************** CONSTANTS ****************************/
@@ -1085,4 +1089,15 @@ struct iw_event
 #define IW_EV_POINT_LEN (IW_EV_LCP_LEN + sizeof(struct iw_point) - \
                          IW_EV_POINT_OFF)
 
+/* Size of the Event prefix when packed in stream */
+#define IW_EV_LCP_PK_LEN        (4)
+/* Size of the various events when packed in stream */
+#define IW_EV_CHAR_PK_LEN       (IW_EV_LCP_PK_LEN + IFNAMSIZ)
+#define IW_EV_UINT_PK_LEN       (IW_EV_LCP_PK_LEN + sizeof(__u32))
+#define IW_EV_FREQ_PK_LEN       (IW_EV_LCP_PK_LEN + sizeof(struct iw_freq))
+#define IW_EV_PARAM_PK_LEN      (IW_EV_LCP_PK_LEN + sizeof(struct iw_param))
+#define IW_EV_ADDR_PK_LEN       (IW_EV_LCP_PK_LEN + sizeof(struct sockaddr))
+#define IW_EV_QUAL_PK_LEN       (IW_EV_LCP_PK_LEN + sizeof(struct iw_quality))
+#define IW_EV_POINT_PK_LEN      (IW_EV_LCP_LEN + 4)
+
 #endif  /* _LINUX_WIRELESS_H */