[Trisquel-security] [USN-1225-1] Linux kernel vulnerabilities

[Marc Deslauriers]

==========================================================================
Ubuntu Security Notice USN-1225-1
October 04, 2011

linux vulnerabilities
==========================================================================

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

- Ubuntu 8.04 LTS

Summary:

Multiple kernel flaws have been fixed.

Software Description:
- linux: Linux kernel

Details:

Timo Warns discovered that the EFI GUID partition table was not correctly
parsed. A physically local attacker that could insert mountable devices
could exploit this to crash the system or possibly gain root privileges.
(CVE-2011-1776)

Dan Rosenberg discovered that the IPv4 diagnostic routines did not
correctly validate certain requests. A local attacker could exploit this to
consume CPU resources, leading to a denial of service. (CVE-2011-2213)

Dan Rosenberg discovered that the Bluetooth stack incorrectly handled
certain L2CAP requests. If a system was using Bluetooth, a remote attacker
could send specially crafted traffic to crash the system or gain root
privileges. (CVE-2011-2497)

Fernando Gont discovered that the IPv6 stack used predictable fragment
identification numbers. A remote attacker could exploit this to exhaust
network resources, leading to a denial of service. (CVE-2011-2699)

Time Warns discovered that long symlinks were incorrectly handled on Be
filesystems. A local attacker could exploit this with a malformed Be
filesystem and crash the system, leading to a denial of service.
(CVE-2011-2928)

Darren Lavender discovered that the CIFS client incorrectly handled certain
large values. A remote attacker with a malicious server could exploit this
to crash the system or possibly execute arbitrary code as the root user.
(CVE-2011-3191)

Update instructions:

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

Ubuntu 8.04 LTS:
  linux-image-2.6.24-29-386       2.6.24-29.94
  linux-image-2.6.24-29-generic   2.6.24-29.94
  linux-image-2.6.24-29-hppa32    2.6.24-29.94
  linux-image-2.6.24-29-hppa64    2.6.24-29.94
  linux-image-2.6.24-29-itanium   2.6.24-29.94
  linux-image-2.6.24-29-lpia      2.6.24-29.94
  linux-image-2.6.24-29-lpiacompat  2.6.24-29.94
  linux-image-2.6.24-29-mckinley  2.6.24-29.94
  linux-image-2.6.24-29-openvz    2.6.24-29.94
  linux-image-2.6.24-29-powerpc   2.6.24-29.94
  linux-image-2.6.24-29-powerpc-smp  2.6.24-29.94
  linux-image-2.6.24-29-powerpc64-smp  2.6.24-29.94
  linux-image-2.6.24-29-rt        2.6.24-29.94
  linux-image-2.6.24-29-server    2.6.24-29.94
  linux-image-2.6.24-29-sparc64   2.6.24-29.94
  linux-image-2.6.24-29-sparc64-smp  2.6.24-29.94
  linux-image-2.6.24-29-virtual   2.6.24-29.94
  linux-image-2.6.24-29-xen       2.6.24-29.94

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

References:
  http://www.ubuntu.com/usn/usn-1225-1
  CVE-2011-1776, CVE-2011-2213, CVE-2011-2497, CVE-2011-2699,
  CVE-2011-2928, CVE-2011-3191

Package Information:
  https://launchpad.net/ubuntu/+source/linux/2.6.24-29.94


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