UBUNTU-CVE-2007-3732

In Linux 2.6 before 2.6.23, the TRACEIRQSON function in iretexc calls a C function without ensuring that the segments are set properly. The kernel's %fs needs to be restored before the call in TRACEIRQSON and before enabling interrupts, so that "current" references work. Without this, "current"...

Design/Logic Flaw

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 PTRACESETREGS and...