systeminfo.c for Sun Solaris allows local users to read kernel memory via a 0 variable count argument to the sysinfo system call, which causes a -1 argument to be used by the copyout function. NOTE: this issue has been referred to as an integer overflow, but it is probably more like a signedness error or integer underflow.
https://exchange.xforce.ibmcloud.com/vulnerabilities/27901
http://www.vupen.com/english/advisories/2006/2936
http://www.securityfocus.com/archive/1/440986/100/100/threaded
http://www.securityfocus.com/archive/1/440849/100/100/threaded
http://www.idefense.com/intelligence/vulnerabilities/display.php?id=410
http://sunsolve.sun.com/search/document.do?assetkey=1-26-102343-1