1. Ubuntu Security Notices
  2. USN-4228-1

USN-4228-1: Linux kernel vulnerabilities

Publication date

7 January 2020

Overview

Several security issues were fixed in the Linux kernel.

Releases

Packages

Details

It was discovered that a heap-based buffer overflow existed in the Marvell
WiFi-Ex Driver for the Linux kernel. A physically proximate attacker could
use this to cause a denial of service (system crash) or possibly execute
arbitrary code. (CVE-2019-14895, CVE-2019-14901)

It was discovered that a heap-based buffer overflow existed in the Marvell
Libertas WLAN Driver for the Linux kernel. A physically proximate attacker
could use this to cause a denial of service (system crash) or possibly
execute arbitrary code. (CVE-2019-14896, CVE-2019-14897)

Anthony Steinhauser discovered that the Linux kernel did not properly
perform Spectre_RSB mitigations to all processors for PowerPC architecture
systems in some situations. A local attacker could use this to expose
sensitive information....

It was discovered that a heap-based buffer overflow existed in the Marvell
WiFi-Ex Driver for the Linux kernel. A physically proximate attacker could
use this to cause a denial of service (system crash) or possibly execute
arbitrary code. (CVE-2019-14895, CVE-2019-14901)

It was discovered that a heap-based buffer overflow existed in the Marvell
Libertas WLAN Driver for the Linux kernel. A physically proximate attacker
could use this to cause a denial of service (system crash) or possibly
execute arbitrary code. (CVE-2019-14896, CVE-2019-14897)

Anthony Steinhauser discovered that the Linux kernel did not properly
perform Spectre_RSB mitigations to all processors for PowerPC architecture
systems in some situations. A local attacker could use this to expose
sensitive information. (CVE-2019-18660)

It was discovered that Geschwister Schneider USB CAN interface driver in
the Linux kernel did not properly deallocate memory in certain failure
conditions. A physically proximate attacker could use this to cause a
denial of service (kernel memory exhaustion). (CVE-2019-19052)

It was discovered that the driver for memoryless force-feedback input
devices in the Linux kernel contained a use-after-free vulnerability. A
physically proximate attacker could possibly use this to cause a denial of
service (system crash) or execute arbitrary code. (CVE-2019-19524)

It was discovered that the PEAK-System Technik USB driver in the Linux
kernel did not properly sanitize memory before sending it to the device. A
physically proximate attacker could use this to expose sensitive
information (kernel memory). (CVE-2019-19534)

Update instructions

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

Learn more about how to get the fixes.

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.

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

Ubuntu Release Package Version
16.04 xenial linux-image-4.4.0-1064-kvm –  4.4.0-1064.71
linux-image-4.4.0-1100-aws –  4.4.0-1100.111
linux-image-4.4.0-1127-raspi2 –  4.4.0-1127.136
linux-image-4.4.0-1131-snapdragon –  4.4.0-1131.139
linux-image-4.4.0-171-generic –  4.4.0-171.200
linux-image-4.4.0-171-generic-lpae –  4.4.0-171.200
linux-image-4.4.0-171-lowlatency –  4.4.0-171.200
linux-image-4.4.0-171-powerpc-e500mc –  4.4.0-171.200
linux-image-4.4.0-171-powerpc-smp –  4.4.0-171.200
linux-image-4.4.0-171-powerpc64-emb –  4.4.0-171.200
linux-image-4.4.0-171-powerpc64-smp –  4.4.0-171.200
linux-image-aws –  4.4.0.1100.104
linux-image-generic –  4.4.0.171.179
linux-image-generic-lpae –  4.4.0.171.179
linux-image-kvm –  4.4.0.1064.64
linux-image-lowlatency –  4.4.0.171.179
linux-image-powerpc-e500mc –  4.4.0.171.179
linux-image-powerpc-smp –  4.4.0.171.179
linux-image-powerpc64-emb –  4.4.0.171.179
linux-image-powerpc64-smp –  4.4.0.171.179
linux-image-raspi2 –  4.4.0.1127.127
linux-image-snapdragon –  4.4.0.1131.123
linux-image-virtual –  4.4.0.171.179

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References

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