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[MAC80211]: Add get_unaligned to ieee80211_get_radiotap_len

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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: Jiri Benc <[email protected]>
Signed-off-by: John W. Linville <[email protected]>
This commit is contained in:
Andy Green authored and David S. Miller committed 2007-10-10 16:47:40 -07:00
1 parent 0ec0b7ac3c
commit dfe6e81dea
1 file changed
+2 -1
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include/net/ieee80211_radiotap.h
+2 -1
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@@ -40,6 +40,7 @@
#include <linux/if_ether.h>
#include <linux/kernel.h>
#include <asm/unaligned.h>
/* Radiotap header version (from official NetBSD feed) */
#define IEEE80211RADIOTAP_VERSION "1.5"
@@ -261,7 +262,7 @@ static inline int ieee80211_get_radiotap_len(unsigned char *data)
struct ieee80211_radiotap_header *hdr =
(struct ieee80211_radiotap_header *)data;
return le16_to_cpu(hdr->it_len);
return le16_to_cpu(get_unaligned(&hdr->it_len));
}
#endif /* IEEE80211_RADIOTAP_H */