Linux kernel 2.6.18, and possibly other versions, when running on AMD64 architectures, allows local users to cause a denial of service (crash) via certain ptrace calls.
Novell Linux Desktop 9 for x86 Novell Linux Desktop 9 for x86_64 Open Enterprise Server openSUSE 10.3 SUSE CORE 9 for AMD64 and Intel EM64T SUSE Linux Enterprise Realtime 10 SP2 SUSE Linux Enterprise SDK 10 SP2