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Ubuntu 14.04 LTS USN-3620-1 Critical: Kernel Denial of Service

ubuntu
Calendar Grey April 4, 2018
Scroller Ubuntu Esm H88
Major vulnerabilities in Ubuntu 14.04 LTS kernel addressed, necessitating an upgrade for enhanced security and reliability. Discover further details within.
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:

It was discovered that the netlink 802.11 configuration interface in the

Linux kernel did not properly validate some attributes passed from

userspace. A local attacker with the CAP_NET_ADMIN privilege could use this

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

code. (CVE-2017-11089)

It was discovered that a buffer overflow existed in the ioctl handling code

in the ISDN subsystem of the Linux kernel. A local attacker could use this

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

code. (CVE-2017-12762)

It was discovered that the netfilter component of the Linux did not

properly restrict access to the connection tracking helpers list. A local

attacker could use this to bypass intended access restrictions.

(CVE-2017-17448)

Dmitry Vyukov discovered that the KVM implementation in the Linux kernel

contained an out-of-boun...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service critical issue kernel update ubuntu system crash linux kernel

Update Instructions

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

Ubuntu 14.04 LTS:
  linux-image-3.13.0-144-generic  3.13.0-144.193
  linux-image-3.13.0-144-generic-lpae  3.13.0-144.193
  linux-image-3.13.0-144-lowlatency  3.13.0-144.193
  linux-image-3.13.0-144-powerpc-e500  3.13.0-144.193
  linux-image-3.13.0-144-powerpc-e500mc  3.13.0-144.193
  linux-image-3.13.0-144-powerpc-smp  3.13.0-144.193
  linux-image-3.13.0-144-powerpc64-emb  3.13.0-144.193
  linux-image-3.13.0-144-powerpc64-smp  3.13.0-144.193
  linux-image-generic             3.13.0.144.154
  linux-image-generic-lpae        3.13.0.144.154
  linux-image-lowlatency          3.13.0.144.154
  linux-image-powerpc-e500        3.13.0.144.154
  linux-image-powerpc-e500mc      3.13.0.144.154
  linux-image-powerpc-smp         3.13.0.144.154
  linux-image-powerpc64-emb       3.13.0.144.154
  linux-image-powerpc64-smp       3.13.0.144.154

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-3620-1

CVE-2017-11089, CVE-2017-12762, CVE-2017-17448, CVE-2017-17741,

CVE-2017-17805, CVE-2017-17807, CVE-2018-1000026, CVE-2018-5332

Severity
critical
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Low
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Critical

April 04, 2018

Topics%20covered

Topics Covered

security advisory denial of service critical issue kernel update ubuntu system crash linux kernel

Package Information

https://launchpad.net/ubuntu/+source/linux/3.13.0-144.193

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