USN-4364-1: Linux kernel vulnerabilities

19 May 2020

linux, linux-aws, linux-kvm, linux-lts-xenial, linux-raspi2, linux-snapdragon vulnerabilities

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 16.04 LTS
  • Ubuntu 14.04 ESM

Summary

Several security issues were fixed in the Linux kernel.

Software Description

  • linux - Linux kernel
  • linux-aws - Linux kernel for Amazon Web Services (AWS) systems
  • linux-kvm - Linux kernel for cloud environments
  • linux-raspi2 - Linux kernel for Raspberry Pi (V7) systems
  • linux-snapdragon - Linux kernel for Qualcomm Snapdragon processors
  • linux-lts-xenial - Linux hardware enablement kernel from Xenial for Trusty

Details

It was discovered that the ADIS16400 IIO IMU Driver for the Linux kernel did not properly deallocate memory in certain error conditions. A local attacker could use this to cause a denial of service (memory exhaustion). (CVE-2019-19060)

It was discovered that the vhost net driver in the Linux kernel contained a stack buffer overflow. A local attacker with the ability to perform ioctl() calls on /dev/vhost-net could use this to cause a denial of service (system crash). (CVE-2020-10942)

It was discovered that the Serial CAN interface driver in the Linux kernel did not properly initialize data. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2020-11494)

It was discovered that the linux kernel did not properly validate certain mount options to the tmpfs virtual memory file system. A local attacker with the ability to specify mount options could use this to cause a denial of service (system crash). (CVE-2020-11565)

It was discovered that the OV51x USB Camera device driver in the Linux kernel did not properly validate device metadata. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2020-11608)

It was discovered that the STV06XX USB Camera device driver in the Linux kernel did not properly validate device metadata. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2020-11609)

It was discovered that the Xirlink C-It USB Camera device driver in the Linux kernel did not properly validate device metadata. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2020-11668)

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 16.04 LTS
linux-image-4.4.0-1071-kvm - 4.4.0-1071.78
linux-image-4.4.0-1107-aws - 4.4.0-1107.118
linux-image-4.4.0-1133-raspi2 - 4.4.0-1133.142
linux-image-4.4.0-1137-snapdragon - 4.4.0-1137.145
linux-image-4.4.0-179-generic - 4.4.0-179.209
linux-image-4.4.0-179-generic-lpae - 4.4.0-179.209
linux-image-4.4.0-179-lowlatency - 4.4.0-179.209
linux-image-4.4.0-179-powerpc-e500mc - 4.4.0-179.209
linux-image-4.4.0-179-powerpc-smp - 4.4.0-179.209
linux-image-4.4.0-179-powerpc64-emb - 4.4.0-179.209
linux-image-4.4.0-179-powerpc64-smp - 4.4.0-179.209
linux-image-aws - 4.4.0.1107.111
linux-image-generic - 4.4.0.179.187
linux-image-generic-lpae - 4.4.0.179.187
linux-image-kvm - 4.4.0.1071.71
linux-image-lowlatency - 4.4.0.179.187
linux-image-powerpc-e500mc - 4.4.0.179.187
linux-image-powerpc-smp - 4.4.0.179.187
linux-image-powerpc64-emb - 4.4.0.179.187
linux-image-powerpc64-smp - 4.4.0.179.187
linux-image-raspi2 - 4.4.0.1133.133
linux-image-snapdragon - 4.4.0.1137.129
linux-image-virtual - 4.4.0.179.187
Ubuntu 14.04 ESM
linux-image-4.4.0-1067-aws - 4.4.0-1067.71
linux-image-4.4.0-179-generic - 4.4.0-179.209~14.04.1+signed1
linux-image-4.4.0-179-generic-lpae - 4.4.0-179.209~14.04.1
linux-image-4.4.0-179-lowlatency - 4.4.0-179.209~14.04.1+signed1
linux-image-4.4.0-179-powerpc-e500mc - 4.4.0-179.209~14.04.1
linux-image-4.4.0-179-powerpc-smp - 4.4.0-179.209~14.04.1
linux-image-4.4.0-179-powerpc64-emb - 4.4.0-179.209~14.04.1
linux-image-4.4.0-179-powerpc64-smp - 4.4.0-179.209~14.04.1
linux-image-aws - 4.4.0.1067.68
linux-image-generic-lpae-lts-xenial - 4.4.0.179.158
linux-image-generic-lts-xenial - 4.4.0.179.158
linux-image-lowlatency-lts-xenial - 4.4.0.179.158
linux-image-powerpc-e500mc-lts-xenial - 4.4.0.179.158
linux-image-powerpc-smp-lts-xenial - 4.4.0.179.158
linux-image-powerpc64-emb-lts-xenial - 4.4.0.179.158
linux-image-powerpc64-smp-lts-xenial - 4.4.0.179.158
linux-image-virtual-lts-xenial - 4.4.0.179.158

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

After a standard system update you need to reboot your computer to make all the necessary changes.

ATTENTION: Due to an unavoidable ABI change the kernel updates have been given a new version number, which requires you to recompile and reinstall all third party kernel modules you might have installed. Unless you manually uninstalled the standard kernel metapackages (e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual, linux-powerpc), a standard system upgrade will automatically perform this as well.

References