The orinoco_ioctl_set_auth function in drivers/net/wireless/orinoco/wext.c in the Linux kernel before 2.6.37 does not properly implement a TKIP protection mechanism, which makes it easier for remote attackers to obtain access to a Wi-Fi network by reading Wi-Fi frames.
https://bugzilla.redhat.com/show_bug.cgi?id=667907
http://www.openwall.com/lists/oss-security/2011/01/06/18
http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.37