CVE-2016-7097 Ubuntu Security Notification for Linux Vulnerabilities (USN-3146-1)

It was discovered that the __get_user_asm_ex implementation in the Linux kernel for x86/x86_64 contained extended asm statements that were incompatible with the exception table.

It was discovered that the filesystem implementation in the Linux kernel did not clear the setgid bit during a setxattr call.

It was that the driver for Areca RAID Controllers in the Linux kernel did not properly validate control messages.

A stack-based buffer overflow in the Broadcom IEEE802.11n FullMAC driver in the Linux kernel.

A local attacker could use this to gain administrative privileges. (CVE-2016-9644)

A local attacker could use this to possibly elevate group privileges. (CVE-2016-7097)

A local attacker could use this to cause a denial of service (system crash) or possibly gain privileges. (CVE-2016-7425)

A local attacker could use this to cause a denial of service (system crash) or possibly gain privileges. (CVE-2016-8658)

Refer to Ubuntu advisory USN-3146-1 for affected packages and patching details, or update with your package manager.

Patch:
Following are links for downloading patches to fix the vulnerabilities:

USN-3146-1: 16.04 (Xenial) on src (linux-image-4.4.0-51-lowlatency)

USN-3146-1: 16.04 (Xenial) on src (linux-image-4.4.0-51-powerpc64-emb)

USN-3146-1: 16.04 (Xenial) on src (linux-image-4.4.0-51-powerpc-smp)

USN-3146-1: 16.04 (Xenial) on src (linux-image-powerpc-e500mc)

USN-3146-1: 16.04 (Xenial) on src (linux-image-powerpc-smp)

USN-3146-1: 16.04 (Xenial) on src (linux-image-4.4.0-51-powerpc64-smp)

USN-3146-1: 16.04 (Xenial) on src (linux-image-4.4.0-51-generic-lpae)

USN-3146-1: 16.04 (Xenial) on src (linux-image-4.4.0-51-generic)

USN-3146-1: 16.04 (Xenial) on src (linux-image-powerpc64-smp)

USN-3146-1: 16.04 (Xenial) on src (linux-image-generic-lpae)

USN-3146-1: 16.04 (Xenial) on src (linux-image-powerpc64-emb)

USN-3146-1: 16.04 (Xenial) on src (linux-image-generic)

USN-3146-1: 16.04 (Xenial) on src (linux-image-lowlatency)

USN-3146-1: 16.04 (Xenial) on src (linux-image-4.4.0-51-powerpc-e500mc)