2.6.22-stable review patch. If anyone has any objections, please let us
know.
------------------
From: Andy Green <[email protected]>
patch dfe6e81deaa79c85086c0cc8d85b229e444ab97f in mainline.
ieee80211_get_radiotap_len() tries to dereference radiotap length without
taking care that it is completely unaligned and get_unaligned()
is required.
Signed-off-by: Andy Green <[email protected]>
Signed-off-by: John W. Linville <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
net/mac80211/ieee80211.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/net/mac80211/ieee80211.c
+++ b/net/mac80211/ieee80211.c
@@ -24,6 +24,7 @@
#include <linux/compiler.h>
#include <linux/bitmap.h>
#include <net/cfg80211.h>
+#include <asm/unaligned.h>
#include "ieee80211_common.h"
#include "ieee80211_i.h"
@@ -338,7 +339,7 @@ static int ieee80211_get_radiotap_len(st
struct ieee80211_radiotap_header *hdr =
(struct ieee80211_radiotap_header *) skb->data;
- return le16_to_cpu(hdr->it_len);
+ return le16_to_cpu(get_unaligned(&hdr->it_len));
}
#ifdef CONFIG_MAC80211_LOWTX_FRAME_DUMP
--
-
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