what you don't know can hurt you

Ubuntu Security Notice USN-4211-2

Ubuntu Security Notice USN-4211-2
Posted Dec 3, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4211-2 - USN-4211-1 fixed vulnerabilities in the Linux kernel for Ubuntu 16.04 LTS. This update provides the corresponding updates for the Linux Hardware Enablement kernel from Ubuntu 16.04 LTS for Ubuntu 14.04 ESM. Zhipeng Xie discovered that an infinite loop could be triggered in the CFS Linux kernel process scheduler. A local attacker could possibly use this to cause a denial of service. Various other issues were also addressed.

tags | advisory, denial of service, kernel, local, vulnerability
systems | linux, ubuntu
advisories | CVE-2018-20784, CVE-2019-17075, CVE-2019-17133
MD5 | fad8472da76f2823f7e48fc875f70f76

Ubuntu Security Notice USN-4211-2

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-4211-2
December 03, 2019

linux-lts-xenial, linux-aws vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 14.04 ESM

Summary:

Several security issues were fixed in the Linux kernel.

Software Description:
- linux-aws: Linux kernel for Amazon Web Services (AWS) systems
- linux-lts-xenial: Linux hardware enablement kernel from Xenial for Trusty

Details:

USN-4211-1 fixed vulnerabilities in the Linux kernel for Ubuntu 16.04
LTS. This update provides the corresponding updates for the Linux
Hardware Enablement (HWE) kernel from Ubuntu 16.04 LTS for Ubuntu
14.04 ESM.

Zhipeng Xie discovered that an infinite loop could be triggered in the CFS
Linux kernel process scheduler. A local attacker could possibly use this to
cause a denial of service. (CVE-2018-20784)

Nicolas Waisman discovered that the WiFi driver stack in the Linux kernel
did not properly validate SSID lengths. A physically proximate attacker
could use this to cause a denial of service (system crash).
(CVE-2019-17133)

Nicolas Waisman discovered that the Chelsio T4/T5 RDMA Driver for the Linux
kernel performed DMA from a kernel stack. A local attacker could use this
to cause a denial of service (system crash). (CVE-2019-17075)

Update instructions:

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

Ubuntu 14.04 ESM:
linux-image-4.4.0-1059-aws 4.4.0-1059.63
linux-image-4.4.0-170-generic 4.4.0-170.199~14.04.1
linux-image-4.4.0-170-generic-lpae 4.4.0-170.199~14.04.1
linux-image-4.4.0-170-lowlatency 4.4.0-170.199~14.04.1
linux-image-4.4.0-170-powerpc-e500mc 4.4.0-170.199~14.04.1
linux-image-4.4.0-170-powerpc-smp 4.4.0-170.199~14.04.1
linux-image-4.4.0-170-powerpc64-emb 4.4.0-170.199~14.04.1
linux-image-4.4.0-170-powerpc64-smp 4.4.0-170.199~14.04.1
linux-image-aws 4.4.0.1059.60
linux-image-generic-lpae-lts-xenial 4.4.0.170.149
linux-image-generic-lts-xenial 4.4.0.170.149
linux-image-lowlatency-lts-xenial 4.4.0.170.149
linux-image-powerpc-e500mc-lts-xenial 4.4.0.170.149
linux-image-powerpc-smp-lts-xenial 4.4.0.170.149
linux-image-powerpc64-emb-lts-xenial 4.4.0.170.149
linux-image-powerpc64-smp-lts-xenial 4.4.0.170.149
linux-image-virtual-lts-xenial 4.4.0.170.149

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://usn.ubuntu.com/4211-2
https://usn.ubuntu.com/4211-1
CVE-2018-20784, CVE-2019-17075, CVE-2019-17133

Comments

RSS Feed Subscribe to this comment feed

No comments yet, be the first!

Login or Register to post a comment

File Archive:

February 2020

  • Su
  • Mo
  • Tu
  • We
  • Th
  • Fr
  • Sa
  • 1
    Feb 1st
    1 Files
  • 2
    Feb 2nd
    2 Files
  • 3
    Feb 3rd
    17 Files
  • 4
    Feb 4th
    15 Files
  • 5
    Feb 5th
    24 Files
  • 6
    Feb 6th
    16 Files
  • 7
    Feb 7th
    19 Files
  • 8
    Feb 8th
    1 Files
  • 9
    Feb 9th
    2 Files
  • 10
    Feb 10th
    15 Files
  • 11
    Feb 11th
    20 Files
  • 12
    Feb 12th
    12 Files
  • 13
    Feb 13th
    18 Files
  • 14
    Feb 14th
    17 Files
  • 15
    Feb 15th
    4 Files
  • 16
    Feb 16th
    4 Files
  • 17
    Feb 17th
    34 Files
  • 18
    Feb 18th
    15 Files
  • 19
    Feb 19th
    19 Files
  • 20
    Feb 20th
    20 Files
  • 21
    Feb 21st
    11 Files
  • 22
    Feb 22nd
    0 Files
  • 23
    Feb 23rd
    0 Files
  • 24
    Feb 24th
    0 Files
  • 25
    Feb 25th
    0 Files
  • 26
    Feb 26th
    0 Files
  • 27
    Feb 27th
    0 Files
  • 28
    Feb 28th
    0 Files
  • 29
    Feb 29th
    0 Files

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2016 Packet Storm. All rights reserved.

Services
Security Services
Hosting By
Rokasec
close