Ubuntu Security Notice 2271-1 - Andy Lutomirski discovered a flaw with the Linux kernel's ptrace syscall on x86_64 processors. An attacker could exploit this flaw to cause a denial of service (System Crash) or potential gain administrative privileges.
391f400f2d6c88c3fd6a45ff28747b979c1947046f719cb6a2b82515e80a1fcf