[USN-3822-2] Linux kernel (Trusty HWE) vulnerabilities
steve.beattie at canonical.com
Wed Nov 14 23:52:07 UTC 2018
Ubuntu Security Notice USN-3822-2
November 14, 2018
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 12.04 ESM
Several security issues were fixed in the Linux kernel.
- linux-lts-trusty: Linux hardware enablement kernel from Trusty for Precise ESM
USN-3822-1 fixed vulnerabilities in the Linux kernel for Ubuntu 14.04
LTS. This update provides the corresponding updates for the Linux
Hardware Enablement (HWE) kernel from Ubuntu 14.04 LTS for Ubuntu
Jim Mattson discovered that the KVM implementation in the Linux kernel
mismanages the #BP and #OF exceptions. A local attacker in a guest virtual
machine could use this to cause a denial of service (guest OS crash).
It was discovered that the generic SCSI driver in the Linux kernel did not
properly enforce permissions on kernel memory access. A local attacker
could use this to expose sensitive information or possibly elevate
Andrey Konovalov discovered that the CDC USB Ethernet driver did not
properly validate device descriptors. A physically proximate attacker could
use this to cause a denial of service (system crash). (CVE-2017-16649)
It was discovered that an integer overflow existed in the CD-ROM driver of
the Linux kernel. A local attacker could use this to expose sensitive
information (kernel memory). (CVE-2018-16658)
It was discovered that an integer overflow existed in the HID Bluetooth
implementation in the Linux kernel that could lead to a buffer overwrite.
An attacker could use this to cause a denial of service (system crash) or
possibly execute arbitrary code. (CVE-2018-9363)
The problem can be corrected by updating your system to the following
Ubuntu 12.04 ESM:
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.
CVE-2016-9588, CVE-2017-13168, CVE-2017-16649, CVE-2018-16658,
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