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Ubuntu Security Notice USN-3097-2

Ubuntu Security Notice USN-3097-2
Posted Oct 14, 2016
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3097-2 - Marco Grassi discovered a use-after-free condition could occur in the TCP retransmit queue handling code in the Linux kernel. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. Pengfei Wang discovered a race condition in the audit subsystem in the Linux kernel. A local attacker could use this to corrupt audit logs or disrupt system-call auditing. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary, kernel, local, tcp
systems | linux, ubuntu
advisories | CVE-2016-6136, CVE-2016-6480, CVE-2016-6828
SHA-256 | 3a46c2fc2da8ed1ac2863686a1c6be2d3b9f7849b29b270bb7aefedc213fe0b0

Ubuntu Security Notice USN-3097-2

Change Mirror Download

==========================================================================
Ubuntu Security Notice USN-3097-2
October 13, 2016

linux-ti-omap4 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-ti-omap4: Linux kernel for OMAP4

Details:

Marco Grassi discovered a use-after-free condition could occur in the TCP
retransmit queue handling code in the Linux kernel. A local attacker could
use this to cause a denial of service (system crash) or possibly execute
arbitrary code. (CVE-2016-6828)

Pengfei Wang discovered a race condition in the audit subsystem in the
Linux kernel. A local attacker could use this to corrupt audit logs or
disrupt system-call auditing. (CVE-2016-6136)

Pengfei Wang discovered a race condition in the Adaptec AAC RAID controller
driver in the Linux kernel when handling ioctl()s. A local attacker could
use this to cause a denial of service (system crash). (CVE-2016-6480)

Update instructions:

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

Ubuntu 12.04 LTS:
linux-image-3.2.0-1489-omap4 3.2.0-1489.116

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:
http://www.ubuntu.com/usn/usn-3097-2
http://www.ubuntu.com/usn/usn-3097-1
CVE-2016-6136, CVE-2016-6480, CVE-2016-6828

Package Information:
https://launchpad.net/ubuntu/+source/linux-ti-omap4/3.2.0-1489.116


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