[USN-1225-1] Linux kernel vulnerabilities

Marc Deslauriers marc.deslauriers at canonical.com
Tue Oct 4 12:49:48 UTC 2011

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


Multiple kernel flaws have been fixed.

Software Description:
- linux: Linux kernel


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.

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.

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.

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.

  CVE-2011-1776, CVE-2011-2213, CVE-2011-2497, CVE-2011-2699,
  CVE-2011-2928, CVE-2011-3191

Package Information:

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