USN-4228-1: Linux kernel vulnerabilities
linux, linux-aws, linux-kvm, linux-raspi2, linux-snapdragon vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 16.04 LTS
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 2
- linux-snapdragon – Linux kernel for Snapdragon processors
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. (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
The problem can be corrected by updating your system to the following package versions:
- Ubuntu 16.04 LTS
- 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
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.