CVE Kennung:	CVE-2007-3731
Beschreibung:	The Linux kernel 2.6.20 and 2.6.21 does not properly handle an invalid LDT segment selector in %cs (the xcs field) during ptrace single-step operations, which allows local users to cause a denial of service (NULL dereference and OOPS) via certain code that makes ptrace PTRACE_SETREGS and PTRACE_SINGLESTEP requests, related to the TRACE_IRQS_ON function, and possibly related to the arch_ptrace function.
Test Kennungen:	1.3.6.1.4.1.25623.1.0.58636   1.3.6.1.4.1.25623.1.0.58637
Querverweise:	Common Vulnerability Exposure (CVE) ID: CVE-2007-3731 BugTraq ID: 25801 http://www.securityfocus.com/bid/25801 Bugtraq: 20080229 rPSA-2008-0094-1 kernel (Google Search) http://www.securityfocus.com/archive/1/488972/100/0/threaded Debian Security Information: DSA-1378 (Google Search) http://www.debian.org/security/2007/dsa-1378 http://bugzilla.kernel.org/show_bug.cgi?id=8765 http://osvdb.org/37286 https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10394 RedHat Security Advisories: RHSA-2007:0940 http://www.redhat.com/support/errata/RHSA-2007-0940.html http://secunia.com/advisories/26935 http://secunia.com/advisories/26955 http://secunia.com/advisories/26978 http://secunia.com/advisories/27322 http://secunia.com/advisories/29159 http://www.ubuntu.com/usn/usn-518-1