USN-3822-1: Linux kernel vulnerabilities

linux vulnerabilities

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

Ubuntu 14.04 LTS

Summary

Several security issues were fixed in the Linux kernel.

Software Description

linux – Linux kernel

Details

Jim Mattson discovered that the KVM implementation in the Linux kernel
mismanages the #BP and #OF exceptions. A local attacker in a guest virtual
machine could use this to cause a denial of service (guest OS crash).
(CVE-2016-9588)

It was discovered that the generic SCSI driver in the Linux kernel did not
properly enforce permissions on kernel memory access. A local attacker
could use this to expose sensitive information or possibly elevate
privileges. (CVE-2017-13168)

Andrey Konovalov discovered that the CDC USB Ethernet driver did not
properly validate device descriptors. A physically proximate attacker could
use this to cause a denial of service (system crash). (CVE-2017-16649)

It was discovered that an integer overflow existed in the CD-ROM driver of
the Linux kernel. A local attacker could use this to expose sensitive
information (kernel memory). (CVE-2018-16658)

It was discovered that an integer overflow existed in the HID Bluetooth
implementation in the Linux kernel that could lead to a buffer overwrite.
An attacker could use this to cause a denial of service (system crash) or
possibly execute arbitrary code. (CVE-2018-9363)

Update instructions

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

Ubuntu 14.04 LTS: linux-image-3.13.0-162-generic – 3.13.0-162.212; linux-image-3.13.0-162-generic-lpae – 3.13.0-162.212; linux-image-3.13.0-162-lowlatency – 3.13.0-162.212; linux-image-3.13.0-162-powerpc-e500 – 3.13.0-162.212; linux-image-3.13.0-162-powerpc-e500mc – 3.13.0-162.212; linux-image-3.13.0-162-powerpc-smp – 3.13.0-162.212; linux-image-3.13.0-162-powerpc64-emb – 3.13.0-162.212; linux-image-3.13.0-162-powerpc64-smp – 3.13.0-162.212; linux-image-generic – 3.13.0.162.172; linux-image-generic-lpae – 3.13.0.162.172; linux-image-lowlatency – 3.13.0.162.172; linux-image-powerpc-e500 – 3.13.0.162.172; linux-image-powerpc-e500mc – 3.13.0.162.172; linux-image-powerpc-smp – 3.13.0.162.172; linux-image-powerpc64-emb – 3.13.0.162.172; linux-image-powerpc64-smp – 3.13.0.162.172

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-3822-1: Linux kernel vulnerabilities

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