[Trisquel-security] [USN-1193-1] Linux kernel vulnerabilities

Kees Cook kees at ubuntu.com
Fri Aug 19 19:18:14 CEST 2011

Ubuntu Security Notice USN-1193-1
August 19, 2011

linux vulnerabilities

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

- Ubuntu 11.04


Multiple kernel flaws have been fixed.

Software Description:
- linux: Linux kernel


Timo Warns discovered that the GUID partition parsing routines did not
correctly validate certain structures. A local attacker with physical
access could plug in a specially crafted block device to crash the system,
leading to a denial of service. (CVE-2011-1577)

Phil Oester discovered that the network bonding system did not correctly
handle large queues. On some systems, a remote attacker could send
specially crafted traffic to crash the system, leading to a denial of
service. (CVE-2011-1581)

Vasiliy Kulikov discovered that taskstats listeners were not correctly
handled. A local attacker could expoit this to exhaust memory and CPU
resources, leading to a denial of service. (CVE-2011-2484)

Sami Liedes discovered that ext4 did not correctly handle missing root
inodes. A local attacker could trigger the mount of a specially crafted
filesystem to cause the system to crash, leading to a denial of service.

Update instructions:

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

Ubuntu 11.04:
  linux-image-2.6.38-11-generic   2.6.38-11.48
  linux-image-2.6.38-11-generic-pae  2.6.38-11.48
  linux-image-2.6.38-11-omap      2.6.38-11.48
  linux-image-2.6.38-11-powerpc   2.6.38-11.48
  linux-image-2.6.38-11-powerpc-smp  2.6.38-11.48
  linux-image-2.6.38-11-powerpc64-smp  2.6.38-11.48
  linux-image-2.6.38-11-server    2.6.38-11.48
  linux-image-2.6.38-11-versatile  2.6.38-11.48
  linux-image-2.6.38-11-virtual   2.6.38-11.48

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

  CVE-2011-1577, CVE-2011-1581, CVE-2011-2484, CVE-2011-2493

Package Information:

-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 874 bytes
Desc: Digital signature
URL: <http://listas.trisquel.info/pipermail/trisquel-security/attachments/20110819/8dbef4a7/attachment.pgp>
-------------- next part --------------
ubuntu-security-announce mailing list
ubuntu-security-announce at lists.ubuntu.com
Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-security-announce

More information about the Trisquel-security mailing list