Ubuntu 16.04 LTS: USN-4364-1 Moderate: Kernel Memory Exhaustion Risks

ubuntu

May 18, 2020

Several security issues were fixed in the Linux kernel.

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-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 c...

Read the Full Advisory

Topics Covered

security advisory denial of service Ubuntu kernel memory exhaustion system crash

Update Instructions

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

Ubuntu 16.04 LTS:
  linux-image-4.4.0-1107-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-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

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.