The auto-reap of child processes in Linux kernel 2.6 before 2.6.15 includes processes with ptrace attached, which leads to a dangling ptrace reference and allows local users to cause a denial of service (crash) and gain root privileges.Referenceshttp://secunia.com/advisories/17917http://www.securityfocus.com/advisories/9806http://www.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=7ed0175a462c4c30f6df6fac1cccac058f997739http://secunia.com/advisories/18203http://www.redhat.com/support/errata/RHSA-2006-0101.htmlhttp://www.securityfocus.com/archive/1/419522/100/0/threadedhttp://www.securityfocus.com/archive/1/439623/100/100/threadedhttp://www.securityfocus.com/archive/1/427981/100/0/threadedhttp://www.securityfocus.com/bid/15625http://secunia.com/advisories/18510https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9080https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=174078http://www.trustix.org/errata/2005/0070http://www.mandriva.com/security/advisories?name=MDKSA-2006:018http://secunia.com/advisories/17918http://www.debian.org/security/2006/dsa-1017http://secunia.com/advisories/19374https://usn.ubuntu.com/231-1/http://secunia.com/advisories/17787http://secunia.com/advisories/17786http://www.vupen.com/english/advisories/2005/2649
