USN-4364-1: Linux kernel vulnerabilities

linux, linux-aws, 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-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-4.4.0-1107-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

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

Source: USN-4364-1: Linux kernel vulnerabilities

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