Linux kernel (Xenial HWE) vulnerabilities


## Releases * Ubuntu 14.04 ESM ## Packages * linux-lts-xenial \- Linux hardware enablement kernel from Xenial for Trusty USN-3169-1 fixed vulnerabilities in the Linux kernel for Ubuntu 16.04 LTS. This update provides the corresponding updates for the Linux Hardware Enablement (HWE) kernel from Ubuntu 16.04 LTS for Ubuntu 14.04 LTS. Dmitry Vyukov discovered that the KVM implementation in the Linux kernel did not properly initialize the Code Segment (CS) in certain error cases. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2016-9756) Andrey Konovalov discovered that signed integer overflows existed in the setsockopt() system call when handling the SO_SNDBUFFORCE and SO_RCVBUFFORCE options. A local attacker with the CAP_NET_ADMIN capability could use this to cause a denial of service (system crash or memory corruption). (CVE-2016-9793) Baozeng Ding discovered a race condition that could lead to a use-after- free in the Advanced Linux Sound Architecture (ALSA) subsystem of the Linux kernel. A local attacker could use this to cause a denial of service (system crash). (CVE-2016-9794)

Affected Package

OS OS Version Package Name Package Version
Ubuntu 14.04 linux-image-4.4.0-59-generic 4.4.0-59.80~14.04.1
Ubuntu 14.04 linux-image-4.4.0-59-generic-lpae 4.4.0-59.80~14.04.1
Ubuntu 14.04 linux-image-4.4.0-59-lowlatency 4.4.0-59.80~14.04.1
Ubuntu 14.04 linux-image-4.4.0-59-powerpc-e500mc 4.4.0-59.80~14.04.1
Ubuntu 14.04 linux-image-4.4.0-59-powerpc-smp 4.4.0-59.80~14.04.1
Ubuntu 14.04 linux-image-4.4.0-59-powerpc64-emb 4.4.0-59.80~14.04.1
Ubuntu 14.04 linux-image-4.4.0-59-powerpc64-smp 4.4.0-59.80~14.04.1