start_kdeinit in KDE 3.5.5 through 3.5.9, when installed setuid root, allows local users to cause a denial of service and possibly execute arbitrary code via “user-influenceable input” (probably command-line arguments) that cause start_kdeinit to send SIGUSR1 signals to other processes.
ftp://ftp.kde.org/pub/kde/security_patches/post-kde-3.5.5-kinit.diff
lists.opensuse.org/opensuse-security-announce/2008-05/msg00000.html
secunia.com/advisories/29951
secunia.com/advisories/29977
secunia.com/advisories/30113
security.gentoo.org/glsa/glsa-200804-30.xml
www.kde.org/info/security/advisory-20080426-2.txt
www.mandriva.com/security/advisories?name=MDVSA-2008:097
www.securityfocus.com/bid/28938
www.securitytracker.com/id?1019924
www.ubuntu.com/usn/usn-608-1
www.vupen.com/english/advisories/2008/1370/references
exchange.xforce.ibmcloud.com/vulnerabilities/42039