Multiple buffer overflows in net/wireless/nl80211.c in the Linux kernel before 2.6.39.2 allow local users to gain privileges by leveraging the CAP_NET_ADMIN capability during scan operations with a long SSID value.
https://github.com/torvalds/linux/commit/208c72f4fe44fe09577e7975ba0e7fa0278f3d03
https://bugzilla.redhat.com/show_bug.cgi?id=718152
http://www.openwall.com/lists/oss-security/2011/07/01/4