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Ubuntu 14.04 LTS: USN-2948-1 Critical: Kernel Denial Of Service Issues

ubuntu
Calendar Grey April 6, 2016
Scroller Ubuntu
Many vulnerabilities in the Ubuntu Linux kernel have been addressed. Guidance on necessary updates and precautions provided for secure usage.
Several security issues were fixed in the kernel.

Summary

Several security issues were fixed in the kernel.

Software Description:

- linux-lts-utopic: Linux hardware enablement kernel from Utopic for Trusty

Details:

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)

Ralf Spenneberg discovered that the usbvision driver in the Linux kernel

did not properly sanity check the interfaces and endpoints reported by the

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

(system crash). (CVE-2015-7833)

Venkatesh Pottem discovered a use-after-free vulnerability in the Linux

kernel's CXGB3 driver. A local attacker could use this to cause a denial of

service (system crash) or possibly execute arbitrary code. (CVE-2015-8812)

It was discovered that a race condition existed in the ioctl handler for

the TTY driver in the Linux kernel....

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service critical issue kernel system update ubuntu hardware enablement

Update Instructions

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

Ubuntu 14.04 LTS:
  linux-image-3.16.0-69-generic   3.16.0-69.89~14.04.1
  linux-image-3.16.0-69-generic-lpae  3.16.0-69.89~14.04.1
  linux-image-3.16.0-69-lowlatency  3.16.0-69.89~14.04.1
  linux-image-3.16.0-69-powerpc-e500mc  3.16.0-69.89~14.04.1
  linux-image-3.16.0-69-powerpc-smp  3.16.0-69.89~14.04.1
  linux-image-3.16.0-69-powerpc64-emb  3.16.0-69.89~14.04.1
  linux-image-3.16.0-69-powerpc64-smp  3.16.0-69.89~14.04.1

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-2948-1

CVE-2015-7566, CVE-2015-7833, CVE-2015-8812, CVE-2016-0723,

CVE-2016-2085, CVE-2016-2550, CVE-2016-2782, CVE-2016-2847

Severity
critical
Lowest
Low
Medium
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Critical

April 06, 2016

Topics%20covered

Topics Covered

security advisory denial of service critical issue kernel system update ubuntu hardware enablement

Package Information

https://launchpad.net/ubuntu/+source/linux-lts-utopic/3.16.0-69.89~14.04.1

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