USN-3072-1: Linux kernel vulnerabilities

Ubuntu Security Notice USN-3072-1

29th August, 2016

linux vulnerabilities

A security issue affects these releases of Ubuntu and its derivatives:

• Ubuntu 12.04 LTS

Summary

Several security issues were fixed in the kernel.

Software description

• linux - Linux kernel

Details

Kangjie Lu discovered an information leak in the Reliable Datagram Sockets
(RDS) implementation in the Linux kernel. A local attacker could use this
to obtain potentially sensitive information from kernel memory.
(CVE-2016-5244)

Yue Cao et al discovered a flaw in the TCP implementation's handling of
challenge acks in the Linux kernel. A remote attacker could use this to
cause a denial of service (reset connection) or inject content into an TCP
stream. (CVE-2016-5696)

It was discovered that a heap based buffer overflow existed in the USB HID
driver in the Linux kernel. A local attacker could use this cause a denial
of service (system crash) or possibly execute arbitrary code.
(CVE-2016-5829)

Update instructions

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

Ubuntu 12.04 LTS:

linux-image-3.2.0-109-generic 3.2.0-109.150

linux-image-3.2.0-109-virtual 3.2.0-109.150

linux-image-3.2.0-109-generic-pae 3.2.0-109.150

linux-image-3.2.0-109-powerpc64-smp 3.2.0-109.150

linux-image-3.2.0-109-highbank 3.2.0-109.150

linux-image-3.2.0-109-omap 3.2.0-109.150

linux-image-3.2.0-109-powerpc-smp 3.2.0-109.150

To update your system, please follow these instructions: http://ift.tt/17VXqjU.

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

CVE-2016-5244, CVE-2016-5696, CVE-2016-5829

from Ubuntu Security Notices http://ift.tt/2bMQL5p