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Ubuntu 15.10 USN-2930-3 Critical: Kernel Denial of Service Issues

ubuntu
Calendar Grey March 16, 2016
Scroller Ubuntu
Enhancements addressing various vulnerabilities in the Ubuntu linux-raspi2 kernel underscore essential upgrades required.
Several security issues were fixed in the kernel.

Summary

Several security issues were fixed in the kernel.

Software Description:

- linux-raspi2: Linux kernel for Raspberry Pi 2

Details:

Ben Hawkes discovered that the Linux netfilter implementation did not

correctly perform validation when handling IPT_SO_SET_REPLACE events. A

local unprivileged attacker could use this to cause a denial of service

(system crash) or possibly execute arbitrary code with administrative

privileges. (CVE-2016-3134)

Ben Hawkes discovered an integer overflow in the Linux netfilter

implementation. On systems running 32 bit kernels, a local unprivileged

attacker could use this to cause a denial of service (system crash) or

possibly execute arbitrary code with administrative privileges.

(CVE-2016-3135)

Ralf Spenneberg discovered that the USB driver for Clie devices in the

Linux kernel did not properly sanity check the endpoints reported by the

device. An attacker with physical access could cause a denial of service

(system crash). (CVE-2015-7566)

It was disco...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service critical update kernel ubuntu usn-2930-3 linux-raspi2

Update Instructions

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

Ubuntu 15.10:
  linux-image-4.2.0-1027-raspi2   4.2.0-1027.35

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

https://ubuntu.com/security/notices/USN-2930-3

https://ubuntu.com/security/notices/USN-2930-1

CVE-2015-7566, CVE-2015-8767, CVE-2016-0723, CVE-2016-2384,

CVE-2016-2782, CVE-2016-3134, CVE-2016-3135

Severity
critical
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Low
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Critical

March 16, 2016

Topics%20covered

Topics Covered

security advisory denial of service critical update kernel ubuntu usn-2930-3 linux-raspi2

Package Information

https://launchpad.net/ubuntu/+source/linux-raspi2/4.2.0-1027.35

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