X.org libFS 1.0.4 and earlier allows X servers to trigger allocation of insufficient memory and a buffer overflow via vectors related to an unexpected sign extension in the FSOpenServer function.Referenceshttp://www.debian.org/security/2013/dsa-2687http://www.ubuntu.com/usn/USN-1853-1http://www.openwall.com/lists/oss-security/2013/05/23/3http://www.securityfocus.com/bid/60130http://www.x.org/wiki/Development/Security/Advisory-2013-05-23
