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AUSCERT External Security Bulletin Redistribution
ESB-2019.3685
USN-4145-1: Linux kernel vulnerabilities
2 October 2019
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AusCERT Security Bulletin Summary
---------------------------------
Product: kernel
Publisher: Ubuntu
Operating System: Ubuntu
Impact/Access: Execute Arbitrary Code/Commands -- Existing Account
Denial of Service -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2019-15926 CVE-2019-15215 CVE-2019-15211
CVE-2019-13631 CVE-2019-11487 CVE-2019-10207
CVE-2019-0136 CVE-2018-20976 CVE-2018-20961
CVE-2017-18509 CVE-2016-10905
Reference: ESB-2019.3612
ESB-2019.3590
ESB-2019.3570
Original Bulletin:
https://usn.ubuntu.com/4145-1/
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USN-4145-1: Linux kernel vulnerabilities
1 October 2019
linux, linux-aws, linux-kvm, linux-raspi2, linux-snapdragon vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
o Ubuntu 16.04 LTS
Summary
Several security issues were fixed in the Linux kernel.
Software Description
o linux - Linux kernel
o linux-aws - Linux kernel for Amazon Web Services (AWS) systems
o linux-kvm - Linux kernel for cloud environments
o linux-raspi2 - Linux kernel for Raspberry Pi 2
o 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
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
o CVE-2016-10905
o CVE-2017-18509
o CVE-2018-20961
o CVE-2018-20976
o CVE-2019-0136
o CVE-2019-10207
o CVE-2019-11487
o CVE-2019-13631
o CVE-2019-15211
o CVE-2019-15215
o CVE-2019-15926
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