DescriptionThe 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.
Overall state of this security issue: Resolved
This issue is currently rated as having moderate severity.
|National Vulnerability Database|
SUSE Timeline for this CVECVE page created: Tue Jul 9 15:40:45 2013
CVE page last modified: Mon Feb 13 11:22:28 2023