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AUSCERT External Security Bulletin Redistribution
ESB-2020.0199
USN-4225-2: Linux kernel (HWE) vulnerabilities
20 January 2020
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AusCERT Security Bulletin Summary
---------------------------------
Product: Linux kernel
Publisher: Ubuntu
Operating System: Ubuntu
Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Denial of Service -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2019-19534 CVE-2019-19529 CVE-2019-19524
CVE-2019-19072 CVE-2019-19055 CVE-2019-19052
CVE-2019-19051 CVE-2019-19045 CVE-2019-18813
CVE-2019-18660 CVE-2019-16231 CVE-2019-14901
CVE-2019-14897 CVE-2019-14896 CVE-2019-14895
Reference: ESB-2020.0141
ESB-2020.0052.2
Original Bulletin:
https://usn.ubuntu.com/4225-2/
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USN-4225-2: Linux kernel (HWE) vulnerabilities
18 January 2020
linux-hwe vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
o Ubuntu 18.04 LTS
Summary
Several security issues were fixed in the Linux kernel.
Software Description
o linux-hwe - Linux hardware enablement (HWE) kernel
Details
USN-4225-1 fixed vulnerabilities in the Linux kernel for Ubuntu 19.10. This
update provides the corresponding updates for the Linux Hardware Enablement
(HWE) kernel from Ubuntu 19.10 for Ubuntu 18.04 LTS.
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)
It was discovered that the Fujitsu ES network device driver for the Linux
kernel did not properly check for errors in some situations, leading to a NULL
pointer dereference. A local attacker could use this to cause a denial of
service. (CVE-2019-16231)
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 the Mellanox Technologies Innova driver in the Linux
kernel did not properly deallocate memory in certain failure conditions. A
local attacker could use this to cause a denial of service (kernel memory
exhaustion). (CVE-2019-19045)
It was discovered that the Intel WiMAX 2400 driver in the Linux kernel did not
properly deallocate memory in certain situations. A local attacker could use
this to cause a denial of service (kernel memory exhaustion). (CVE-2019-19051)
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 netlink-based 802.11 configuration interface in the
Linux kernel did not deallocate memory in certain error conditions. A local
attacker could possibly use this to cause a denial of service (kernel memory
exhaustion). (CVE-2019-19055)
It was discovered that the event tracing subsystem of the Linux kernel did not
properly deallocate memory in certain error conditions. A local attacker could
use this to cause a denial of service (kernel memory exhaustion).
(CVE-2019-19072)
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 Microchip CAN BUS Analyzer driver in the Linux
kernel contained a use-after-free vulnerability on device disconnect. A
physically proximate attacker could use this to cause a denial of service
(system crash) or possibly execute arbitrary code. (CVE-2019-19529)
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)
It was discovered that the DesignWare USB3 controller driver in the Linux
kernel did not properly deallocate memory in some error conditions. A local
attacker could possibly use this to cause a denial of service (memory
exhaustion). (CVE-2019-18813)
Update instructions
The problem can be corrected by updating your system to the following package
versions:
Ubuntu 18.04 LTS
linux-image-5.3.0-26-generic - 5.3.0-26.28~18.04.1
linux-image-5.3.0-26-generic-lpae - 5.3.0-26.28~18.04.1
linux-image-5.3.0-26-lowlatency - 5.3.0-26.28~18.04.1
linux-image-generic-hwe-18.04 - 5.3.0.26.95
linux-image-generic-lpae-hwe-18.04 - 5.3.0.26.95
linux-image-lowlatency-hwe-18.04 - 5.3.0.26.95
linux-image-snapdragon-hwe-18.04 - 5.3.0.26.95
linux-image-virtual-hwe-18.04 - 5.3.0.26.95
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 USN-4225-1
o CVE-2019-14895
o CVE-2019-14896
o CVE-2019-14897
o CVE-2019-14901
o CVE-2019-16231
o CVE-2019-18660
o CVE-2019-18813
o CVE-2019-19045
o CVE-2019-19051
o CVE-2019-19052
o CVE-2019-19055
o CVE-2019-19072
o CVE-2019-19524
o CVE-2019-19529
o CVE-2019-19534
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