Ubuntu Security Notice 3167-1 – Dmitry Vyukov discovered that the KVM implementation in the Linux kernel did not properly initialize the Code Segment in certain error cases. A local attacker could use this to expose sensitive information. Baozeng Ding discovered a race condition that could lead to a use-after- free in the Advanced Linux Sound Architecture subsystem of the Linux kernel. A local attacker could use this to cause a denial of service. Various other issues were also addressed.