exploit the possibilities
Home Files News &[SERVICES_TAB]About Contact Add New

Ubuntu Security Notice USN-2908-4

Ubuntu Security Notice USN-2908-4
Posted Feb 27, 2016
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2908-4 - USN-2908-1 fixed vulnerabilities in the Linux kernel for Ubuntu 15.10. An incorrect locking fix caused a regression that broke graphics displays for Ubuntu 15.10 guests running within VMWare virtual machines. This update fixes the problem. Various other issues were also addressed.

tags | advisory, kernel, vulnerability
systems | linux, ubuntu
advisories | CVE-2013-4312, CVE-2015-8785, CVE-2016-1575, CVE-2016-1576, CVE-2016-2069
SHA-256 | 2ae3612b5f8c1f000a29250f123157f70e9d98b5ff013458912d9c9b43f07b03

Ubuntu Security Notice USN-2908-4

Change Mirror Download
Content-Disposition: inline


============================================================================
Ubuntu Security Notice USN-2908-4
February 26, 2016

linux regression
============================================================================

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

- Ubuntu 15.10

Summary:

USN-2908-1 introduced a regression in the Linux kernel.

Software Description:
- linux: Linux kernel

Details:

USN-2908-1 fixed vulnerabilities in the Linux kernel for Ubuntu
15.10. An incorrect locking fix caused a regression that broke
graphics displays for Ubuntu 15.10 guests running within VMWare
virtual machines. This update fixes the problem.

We apologize for the inconvenience.

Original advisory details:

halfdog discovered that OverlayFS, when mounting on top of a FUSE mount,
incorrectly propagated file attributes, including setuid. A local
unprivileged attacker could use this to gain privileges. (CVE-2016-1576)

halfdog discovered that OverlayFS in the Linux kernel incorrectly
propagated security sensitive extended attributes, such as POSIX ACLs. A
local unprivileged attacker could use this to gain privileges.
(CVE-2016-1575)

It was discovered that the Linux kernel did not properly enforce rlimits
for file descriptors sent over UNIX domain sockets. A local attacker could
use this to cause a denial of service. (CVE-2013-4312)

It was discovered that the Linux kernel's Filesystem in Userspace (FUSE)
implementation did not handle initial zero length segments properly. A
local attacker could use this to cause a denial of service (unkillable
task). (CVE-2015-8785)

Andy Lutomirski discovered a race condition in the Linux kernel's
translation lookaside buffer (TLB) handling of flush events. A local
attacker could use this to cause a denial of service or possibly leak
sensitive information. (CVE-2016-2069)

Update instructions:

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

Ubuntu 15.10:
linux-image-4.2.0-30-generic 4.2.0-30.36
linux-image-4.2.0-30-generic-lpae 4.2.0-30.36
linux-image-4.2.0-30-lowlatency 4.2.0-30.36
linux-image-4.2.0-30-powerpc-e500mc 4.2.0-30.36
linux-image-4.2.0-30-powerpc-smp 4.2.0-30.36
linux-image-4.2.0-30-powerpc64-emb 4.2.0-30.36
linux-image-4.2.0-30-powerpc64-smp 4.2.0-30.36

After a standard system update you need to reboot your computer to make
all the necessary changes.

References:
http://www.ubuntu.com/usn/usn-2908-4
http://www.ubuntu.com/usn/usn-2908-1
https://launchpad.net/bugs/1548587

Package Information:
https://launchpad.net/ubuntu/+source/linux/4.2.0-30.36
Login or Register to add favorites

File Archive:

July 2022

  • Su
  • Mo
  • Tu
  • We
  • Th
  • Fr
  • Sa
  • 1
    Jul 1st
    52 Files
  • 2
    Jul 2nd
    0 Files
  • 3
    Jul 3rd
    0 Files
  • 4
    Jul 4th
    11 Files
  • 5
    Jul 5th
    0 Files
  • 6
    Jul 6th
    0 Files
  • 7
    Jul 7th
    0 Files
  • 8
    Jul 8th
    0 Files
  • 9
    Jul 9th
    0 Files
  • 10
    Jul 10th
    0 Files
  • 11
    Jul 11th
    0 Files
  • 12
    Jul 12th
    0 Files
  • 13
    Jul 13th
    0 Files
  • 14
    Jul 14th
    0 Files
  • 15
    Jul 15th
    0 Files
  • 16
    Jul 16th
    0 Files
  • 17
    Jul 17th
    0 Files
  • 18
    Jul 18th
    0 Files
  • 19
    Jul 19th
    0 Files
  • 20
    Jul 20th
    0 Files
  • 21
    Jul 21st
    0 Files
  • 22
    Jul 22nd
    0 Files
  • 23
    Jul 23rd
    0 Files
  • 24
    Jul 24th
    0 Files
  • 25
    Jul 25th
    0 Files
  • 26
    Jul 26th
    0 Files
  • 27
    Jul 27th
    0 Files
  • 28
    Jul 28th
    0 Files
  • 29
    Jul 29th
    0 Files
  • 30
    Jul 30th
    0 Files
  • 31
    Jul 31st
    0 Files

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2022 Packet Storm. All rights reserved.

Hosting By
Rokasec
close