The kernel packages contain the Linux kernel, the core of any Linux operating system. This update fixes the following security issue: * A race condition was found in the way the Linux kernel"s ptrace implementation handled PTRACE_SETREGS requests when the debuggee was woken due to a SIGKILL signal instead of being stopped. A local, unprivileged user could use this flaw to escalate their privileges. Users should upgrade to these updated packages, which contain a backported patch to correct this issue. The system must be rebooted for this update to take effect.