Ubuntu Linux Critical Kernel Vulnerabilities Fix Available

by on July 16, 2008 · 1 comment· LAST UPDATED July 16, 2008

in , ,

Canonical Ltd has issued updates for its Kernel package to plug multiple security holes. A security issue affects the following Ubuntu releases:

=> Ubuntu 6.06 LTS
=> Ubuntu 7.04
=> Ubuntu 7.10
=> Ubuntu 8.04 LTS

This advisory also applies to the corresponding versions of Kubuntu, Edubuntu, and Xubuntu.

Description

IPsec protocol stack did not correctly handle fragmented ESP packets. A remote attacker could exploit this to crash the system, leading to a denial of service.(CVE-2007-6282)

The 64bit kernel did not correctly handle hrtimer updates. A local attacker could request a large expiration value and cause the system to hang, leading to a denial of service. (CVE-2007-6712)

The ia32 emulation under 64bit kernels did not fully clear uninitialized data. A local attacker could read private kernel memory, leading to a loss of privacy. (CVE-2008-0598)

A race condition was discovered between ptrace and utrace in the kernel. A
local attacker could exploit this to crash the system, leading to a denial
of service. (CVE-2008-2365)

The copy_to_user routine in the kernel did not correctly clear memory destination addresses when running on 64bit kernels. A local attacker could exploit this to gain access to sensitive kernel memory, leading to a loss of privacy. (CVE-2008-2729)

The PPP over L2TP routines in the kernel did not correctly handle certain messages. A remote attacker could send a specially crafted packet that could crash the system or execute arbitrary code. (CVE-2008-2750)

Gabriel Campana discovered that SCTP routines did not correctly check for large addresses. A local user could exploit this to allocate all available memory, leading to a denial of service. (CVE-2008-2826)

How do I update Kernel package?

Open terminal and type the following two commands:
$ sudo apt-get update
$ sudo apt-get upgrade

After a standard system upgrade you need to reboot your computer to effect the necessary changes:
$ sudo reboot



If you would like to be kept up to date with our posts, you can follow us on Twitter, Facebook, Google+, or even by subscribing to our RSS Feed.


{ 1 comment… read it below or add one }

1 ali imron July 18, 2008 at 6:58 am

i want a linux downloads this page

Reply

Leave a Comment

You can use these HTML tags and attributes for your code and commands: <strong> <em> <ol> <li> <u> <ul> <blockquote> <pre> <a href="" title="">
What is 3 + 2 ?
Please leave these two fields as-is:
Solve the simple math so we know that you are a human and not a bot.

Tagged as: , , , , , , , , , , , , , , , , , , , , , , , , , , ,

Previous post:

Next post: