exploit the possibilities

Kernel Live Patch Security Notice LSN-0035-1

Kernel Live Patch Security Notice LSN-0035-1
Posted Feb 23, 2018
Authored by Benjamin M. Romer

On February 22, fixes for CVE-2017-5715 were released into the Ubuntu Xenial kernel version 4.4.0-116.140. This CVE, also known as "Spectre," is caused by flaws in the design of speculative execution hardware in the computer's CPU, and could be used to access sensitive information in kernel memory.

tags | advisory, kernel
systems | linux, ubuntu
advisories | CVE-2017-5715
MD5 | 95a67778ff266fb5d137537edcd1a426

Kernel Live Patch Security Notice LSN-0035-1

Change Mirror Download
==========================================================================
Kernel Live Patch Security Notice LSN-0035-1
February 22, 2018

linux vulnerability
==========================================================================

A security issue affects these releases of Ubuntu:

| Series | Base kernel | Arch | flavors |
|------------------+--------------+----------+------------------|
| Ubuntu 16.04 LTS | 4.4.0 | amd64 | generic |
| Ubuntu 16.04 LTS | 4.4.0 | amd64 | lowlatency |
| Ubuntu 14.04 LTS | 4.4.0 | amd64 | generic |
| Ubuntu 14.04 LTS | 4.4.0 | amd64 | lowlatency |

Summary:

On February 22, fixes for CVE-2017-5715 were released into the Ubuntu Xenial
kernel version 4.4.0-116.140. This CVE, also known as "Spectre," is caused
by flaws in the design of speculative execution hardware in the computer's
CPU, and could be used to access sensitive information in kernel memory.

The mitigation for "Spectre" is accomplished using retpoline, a new compiler
feature that prevents speculation when an indirect call is made. Unfortunately,
it is not possible to generate a livepatch when a compiler change is required
by a fix, as livepatches must be generated with the same compiler as the
target kernel. Please plan to reboot into kernel version 4.4.0-116.140 or
newer as soon as possible.

Additional details on the vulnerability and our response can be found here:
https://wiki.ubuntu.com/SecurityTeam/KnowledgeBase/SpectreAndMeltdown

Software Description:
- linux: Linux kernel

Update instructions:

The problem can be corrected by installing an updated kernel with these
fixes and rebooting.

References:
CVE-2017-5715

--
ubuntu-security-announce mailing list
ubuntu-security-announce@lists.ubuntu.com
Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-security-announce

Comments

RSS Feed Subscribe to this comment feed

No comments yet, be the first!

Login or Register to post a comment

File Archive:

February 2019

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

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2019 Packet Storm. All rights reserved.

Services
Security Services
Hosting By
Rokasec
close