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Ubuntu Security Notice USN-4145-1

Ubuntu Security Notice USN-4145-1
Posted Oct 1, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4145-1 - 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. 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 or possibly execute arbitrary code. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2016-10905, CVE-2017-18509, CVE-2018-20961, CVE-2018-20976, CVE-2019-0136, CVE-2019-10207, CVE-2019-11487, CVE-2019-13631, CVE-2019-15211, CVE-2019-15215, CVE-2019-15926
MD5 | ea50ef6fe5c28f797b35ddfa61c716dc

Ubuntu Security Notice USN-4145-1

Change Mirror Download
=========================================================================
Ubuntu Security Notice USN-4145-1
October 01, 2019

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 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:

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

Ubuntu 16.04 LTS:
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

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:
https://usn.ubuntu.com/4145-1
CVE-2016-10905, CVE-2017-18509, CVE-2018-20961, CVE-2018-20976,
CVE-2019-0136, CVE-2019-10207, CVE-2019-11487, CVE-2019-13631,
CVE-2019-15211, CVE-2019-15215, CVE-2019-15926

Package Information:
https://launchpad.net/ubuntu/+source/linux/4.4.0-165.193
https://launchpad.net/ubuntu/+source/linux-aws/4.4.0-1095.106
https://launchpad.net/ubuntu/+source/linux-kvm/4.4.0-1059.66
https://launchpad.net/ubuntu/+source/linux-raspi2/4.4.0-1123.132
https://launchpad.net/ubuntu/+source/linux-snapdragon/4.4.0-1127.135
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