1. Ubuntu Security Notices
  2. USN-4145-1

USN-4145-1: Linux kernel vulnerabilities

Publication date

1 October 2019

Overview

Several security issues were fixed in the Linux kernel.

Releases

Packages

Details

It was discovered that a race condition existed in the GFS2 file system in
the Linux kernel. A local attacker could possibly use this to cause a
denial of service (system crash). (CVE-2016-10905)

It was discovered that the IPv6 implementation in the Linux kernel did not
properly validate socket options in some situations. A local attacker could
use this to cause a denial of service (system crash) or possibly execute
arbitrary code. (CVE-2017-18509)

It was discovered that the USB gadget Midi driver in the Linux kernel
contained a double-free vulnerability when handling certain error
conditions. A local attacker could use this to cause a denial of service
(system crash). (CVE-2018-20961)

It was discovered that the XFS file system in the Linux kernel did not
properly handle mount failures in some situations. A...

It was discovered that a race condition existed in the GFS2 file system in
the Linux kernel. A local attacker could possibly use this to cause a
denial of service (system crash). (CVE-2016-10905)

It was discovered that the IPv6 implementation in the Linux kernel did not
properly validate socket options in some situations. A local attacker could
use this to cause a denial of service (system crash) or possibly execute
arbitrary code. (CVE-2017-18509)

It was discovered that the USB gadget Midi driver in the Linux kernel
contained a double-free vulnerability when handling certain error
conditions. A local attacker could use this to cause a denial of service
(system crash). (CVE-2018-20961)

It was discovered that the XFS file system in the Linux kernel did not
properly handle mount failures in some situations. A local attacker could
possibly use this to cause a denial of service (system crash) or execute
arbitrary code. (CVE-2018-20976)

It was discovered that the Intel Wi-Fi device driver in the Linux kernel
did not properly validate certain Tunneled Direct Link Setup (TDLS). A
physically proximate attacker could use this to cause a denial of service
(Wi-Fi disconnect). (CVE-2019-0136)

It was discovered that the Bluetooth UART implementation in the Linux
kernel did not properly check for missing tty operations. A local attacker
could use this to cause a denial of service. (CVE-2019-10207)

It was discovered that an integer overflow existed in the Linux kernel when
reference counting pages, leading to potential use-after-free issues. A
local attacker could use this to cause a denial of service (system crash)
or possibly execute arbitrary code. (CVE-2019-11487)

It was discovered that the GTCO tablet input driver in the Linux kernel did
not properly bounds check the initial HID report sent by the device. A
physically proximate attacker could use this to cause a denial of service
(system crash) or possibly execute arbitrary code. (CVE-2019-13631)

It was discovered that the Raremono AM/FM/SW radio device driver in the
Linux kernel did not properly allocate memory, leading to a use-after-free.
A physically proximate attacker could use this to cause a denial of service
or possibly execute arbitrary code. (CVE-2019-15211)

It was discovered that a race condition existed in the CPiA2 video4linux
device driver for the Linux kernel, leading to a use-after-free. A
physically proximate attacker could use this to cause a denial of service
(system crash) or possibly execute arbitrary code. (CVE-2019-15215)

It was discovered that the Atheros mobile chipset driver in the Linux
kernel did not properly validate data in some situations. An attacker could
use this to cause a denial of service (system crash). (CVE-2019-15926)

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-4.4.0-1059-kvm –  4.4.0-1059.66
linux-image-4.4.0-1095-aws –  4.4.0-1095.106
linux-image-4.4.0-1123-raspi2 –  4.4.0-1123.132
linux-image-4.4.0-1127-snapdragon –  4.4.0-1127.135
linux-image-4.4.0-165-generic –  4.4.0-165.193
linux-image-4.4.0-165-generic-lpae –  4.4.0-165.193
linux-image-4.4.0-165-lowlatency –  4.4.0-165.193
linux-image-4.4.0-165-powerpc-e500mc –  4.4.0-165.193
linux-image-4.4.0-165-powerpc-smp –  4.4.0-165.193
linux-image-4.4.0-165-powerpc64-emb –  4.4.0-165.193
linux-image-4.4.0-165-powerpc64-smp –  4.4.0-165.193
linux-image-aws –  4.4.0.1095.99
linux-image-generic –  4.4.0.165.173
linux-image-generic-lpae –  4.4.0.165.173
linux-image-kvm –  4.4.0.1059.59
linux-image-lowlatency –  4.4.0.165.173
linux-image-powerpc-e500mc –  4.4.0.165.173
linux-image-powerpc-smp –  4.4.0.165.173
linux-image-powerpc64-emb –  4.4.0.165.173
linux-image-powerpc64-smp –  4.4.0.165.173
linux-image-raspi2 –  4.4.0.1123.123
linux-image-snapdragon –  4.4.0.1127.119
linux-image-virtual –  4.4.0.165.173

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References

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