Hi,

FYI: oss-security lately had a posting with the title »Address Sanitizer local root« (URL:http://www.openwall.com/lists/oss-security/2016/02/17/9) The author showed that building a suid binary with ASan enables local root exploits. He also shows some other problems with this approach.

In his posting he mentions the Tor Browser and recommends to not use the word »hardened«, because it is misleading.