Twenty Year Anniversary

Ubuntu Security Notice USN-3678-3

Ubuntu Security Notice USN-3678-3
Posted Jun 12, 2018
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3678-3 - Wen Xu discovered that the ext4 filesystem implementation in the Linux kernel did not properly handle corrupted meta data in some situations. An attacker could use this to specially craft an ext4 file system that caused a denial of service when mounted. It was discovered that the 802.11 software simulator implementation in the Linux kernel contained a memory leak when handling certain error conditions. 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, memory leak
systems | linux, ubuntu
advisories | CVE-2018-10021, CVE-2018-1092, CVE-2018-8087
MD5 | b71a6729238f35ec13634f2c220c34d3

Ubuntu Security Notice USN-3678-3

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-3678-3
June 12, 2018

linux-azure vulnerabilities
==========================================================================

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

- Ubuntu 18.04 LTS

Summary:

Several security issues were fixed in the Linux kernel.

Software Description:
- linux-azure: Linux kernel for Microsoft Azure Cloud systems

Details:

Wen Xu discovered that the ext4 filesystem implementation in the Linux
kernel did not properly handle corrupted meta data in some situations. An
attacker could use this to specially craft an ext4 file system that caused
a denial of service (system crash) when mounted. (CVE-2018-1092)

It was discovered that the 802.11 software simulator implementation in the
Linux kernel contained a memory leak when handling certain error
conditions. A local attacker could possibly use this to cause a denial of
service (memory exhaustion). (CVE-2018-8087)

It was discovered that a memory leak existed in the Serial Attached SCSI
(SAS) implementation in the Linux kernel. A physically proximate attacker
could use this to cause a denial of service (memory exhaustion).
(CVE-2018-10021)

Update instructions:

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

Ubuntu 18.04 LTS:
linux-image-4.15.0-1013-azure 4.15.0-1013.13
linux-image-azure 4.15.0.1013.13

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/usn/usn-3678-3
https://usn.ubuntu.com/usn/usn-3678-1
CVE-2018-10021, CVE-2018-1092, CVE-2018-8087

Package Information:
https://launchpad.net/ubuntu/+source/linux-azure/4.15.0-1013.13

Comments

RSS Feed Subscribe to this comment feed

No comments yet, be the first!

Login or Register to post a comment

File Archive:

September 2018

  • Su
  • Mo
  • Tu
  • We
  • Th
  • Fr
  • Sa
  • 1
    Sep 1st
    1 Files
  • 2
    Sep 2nd
    3 Files
  • 3
    Sep 3rd
    15 Files
  • 4
    Sep 4th
    15 Files
  • 5
    Sep 5th
    18 Files
  • 6
    Sep 6th
    18 Files
  • 7
    Sep 7th
    15 Files
  • 8
    Sep 8th
    2 Files
  • 9
    Sep 9th
    2 Files
  • 10
    Sep 10th
    16 Files
  • 11
    Sep 11th
    17 Files
  • 12
    Sep 12th
    15 Files
  • 13
    Sep 13th
    29 Files
  • 14
    Sep 14th
    21 Files
  • 15
    Sep 15th
    3 Files
  • 16
    Sep 16th
    1 Files
  • 17
    Sep 17th
    15 Files
  • 18
    Sep 18th
    16 Files
  • 19
    Sep 19th
    29 Files
  • 20
    Sep 20th
    18 Files
  • 21
    Sep 21st
    5 Files
  • 22
    Sep 22nd
    2 Files
  • 23
    Sep 23rd
    2 Files
  • 24
    Sep 24th
    15 Files
  • 25
    Sep 25th
    69 Files
  • 26
    Sep 26th
    0 Files
  • 27
    Sep 27th
    0 Files
  • 28
    Sep 28th
    0 Files
  • 29
    Sep 29th
    0 Files
  • 30
    Sep 30th
    0 Files

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2018 Packet Storm. All rights reserved.

Services
Security Services
Hosting By
Rokasec
close