kernel: security and bugfix update (important)

The Linux kernel was updated to fix various bugs and security issues: CVE-2013-0871: Race condition in the ptrace functionality in the Linux kernel allowed local users to gain privileges via a PTRACESETREGS ptrace system call in a crafted application, as demonstrated by ptracedeath. CVE-2013-0160...

UBUNTU-CVE-2012-2745

The copycreds function in kernel/cred.c in the Linux kernel before 3.3.2 provides an invalid replacement session keyring to a child process, which allows local users to cause a denial of service panic via a crafted application that uses the fork system call...

kernel: cred: copy_process() should clear child->replacement_session_keyring

The copycreds function in kernel/cred.c in the Linux kernel before 3.3.2 provides an invalid replacement session keyring to a child process, which allows local users to cause a denial of service panic via a crafted application that uses the fork system call...