Alerts This Week
Warning Icon 1 640
Alerts This Week
Warning Icon 1 640

Ubuntu 14.04 LTS USN-3381-1 Critical: Kernel Integer Overflows

ubuntu
Calendar Grey August 7, 2017
Dist Ubuntu Esm H88
Several vulnerabilities in the Linux kernel were fixed to improve security measures for Ubuntu 14.04 LTS, ensuring reliability.
Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

- linux: Linux kernel

Details:

Peter Pi discovered that the colormap handling for frame buffer devices in

the Linux kernel contained an integer overflow. A local attacker could use

this to disclose sensitive information (kernel memory). (CVE-2016-8405)

It was discovered that the Linux kernel did not properly restrict

RLIMIT_STACK size. A local attacker could use this in conjunction with

another vulnerability to possibly execute arbitrary code.

(CVE-2017-1000365)

It was discovered that SELinux in the Linux kernel did not properly handle

empty writes to /proc/pid/attr. A local attacker could use this to cause a

denial of service (system crash). (CVE-2017-2618)

石磊 discovered that the RxRPC Kerberos 5 ticket handling code in the

Linux kernel did not properly verify metadata. A remote attacker could use

this to cause a denial of service (system crash) or possibly execute

arbit...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory critical DoS Ubuntu kernel integer overflow arbitrary code

Update Instructions

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

Ubuntu 14.04 LTS:
  linux-image-3.13.0-126-generic  3.13.0-126.175
  linux-image-3.13.0-126-generic-lpae  3.13.0-126.175
  linux-image-3.13.0-126-lowlatency  3.13.0-126.175
  linux-image-3.13.0-126-powerpc-e500  3.13.0-126.175
  linux-image-3.13.0-126-powerpc-e500mc  3.13.0-126.175
  linux-image-3.13.0-126-powerpc-smp  3.13.0-126.175
  linux-image-3.13.0-126-powerpc64-emb  3.13.0-126.175
  linux-image-3.13.0-126-powerpc64-smp  3.13.0-126.175
  linux-image-generic             3.13.0.126.136
  linux-image-generic-lpae        3.13.0.126.136
  linux-image-lowlatency          3.13.0.126.136
  linux-image-powerpc-e500        3.13.0.126.136
  linux-image-powerpc-e500mc      3.13.0.126.136
  linux-image-powerpc-smp         3.13.0.126.136
  linux-image-powerpc64-emb       3.13.0.126.136
  linux-image-powerpc64-smp       3.13.0.126.136

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-3381-1

CVE-2016-8405, CVE-2017-1000365, CVE-2017-2618, CVE-2017-7482

Severity
critical
Lowest
Low
Medium
High
Critical

August 07, 2017

Topics%20covered

Topics Covered

security advisory critical DoS Ubuntu kernel integer overflow arbitrary code

Package Information

https://launchpad.net/ubuntu/+source/linux/3.13.0-126.175

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.

Your message here