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Ubuntu 10.04 LTS USN-1161-1 Critical: Linux Kernel Issues Detected

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Calendar Grey July 13, 2011
Scroller Ubuntu
Several critical vulnerabilities fixed in Ubuntu Security Announcement USN-1161-1. Essential updates needed to ensure secure performance.
Multiple kernel flaws have been fixed.

Summary

Multiple kernel flaws have been fixed.

Software Description:

- linux-ec2: Linux kernel for EC2

Details:

Vasiliy Kulikov discovered that kvm did not correctly clear memory. A local

attacker could exploit this to read portions of the kernel stack, leading

to a loss of privacy. (CVE-2010-3881)

Timo Warns discovered that the LDM disk partition handling code did not

correctly handle certain values. By inserting a specially crafted disk

device, a local attacker could exploit this to gain root privileges.

(CVE-2011-1017)

Neil Horman discovered that NFSv4 did not correctly handle certain ordersof operation with ACL data. A remote attacker with access to an NFSv4 mount

could exploit this to crash the system, leading to a denial of service.

(CVE-2011-1090)

Timo Warns discovered that OSF partition parsing routines did not correctly

clear memory. A local attacker with physical access could plug in a

specially crafted block device to read kernel memory, leading to a loss of

privacy. (CVE-...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory critical remote access memory leak ubuntu system crash linux kernel

Update Instructions

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

Ubuntu 10.04 LTS:
  linux-image-2.6.32-317-ec2      2.6.32-317.36

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. If
you use linux-restricted-modules, you have to update that package as
well to get modules which work with the new kernel version. Unless you
manually uninstalled the standard kernel metapackages (e.g. linux-generic,
linux-server, linux-powerpc), a standard system upgrade will automatically
perform this as well.

References

https://ubuntu.com/security/notices/USN-1161-1

CVE-2010-3881, CVE-2011-1017, CVE-2011-1090, CVE-2011-1163,

CVE-2011-1494, CVE-2011-1495, CVE-2011-1593, CVE-2011-1598,

CVE-2011-1745, CVE-2011-1746, CVE-2011-1747, CVE-2011-1748,

CVE-2011-1770, CVE-2011-2022

Severity
critical
Lowest
Low
Medium
High
Critical

July 13, 2011

Topics%20covered

Topics Covered

security advisory critical remote access memory leak ubuntu system crash linux kernel

Package Information

https://launchpad.net/ubuntu/+source/linux-ec2/2.6.32-317.36

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