Ubuntu issues security patch for kernel flaw

Ubuntu today became the latest Linux vendor to patch a vulnerability in the open source operating system's kernel that could have left the door open for hackers to find their way into users' machines.

In an email sent overnight, the Linux vendor warned users to update all machines running recent versions of Ubuntu, ranging from 6.06, which was released back in mid-2006, to version 8.04, which came out earlier this year. The problem also applied to other versions of Ubuntu such as Kubuntu, Edubuntu and Xubuntu.

"It was discovered that there were multiple NULL-pointed function de-references in the Linux kernel terminal handling code," wrote Ubuntu administrators in the email. "A local attacker could exploit this to execute arbitrary code as root, or crash the system, leading to a denial of service."

The email also detailed a number of other bugs which could be exploited by an attacker who already had some level of access to a computer running Ubuntu.

A number of other Linux vendors including Novell have recently released similar patches to address the problems.

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Talkback 8 comments

    is this really news? Anonymous -- 26/08/08

    Is every security flaw published for anything news anymore? I mean cmon, there are serious flaws in many different Linux kernels, in Windows, in all sorts of things published every month. Do you guys really need to publish every damn one of them? get off mah RSS feed...

    yes. Anonymous -- 26/08/08 (in reply to #320110625)

    Linux having security issues? That's news!

    You're just bitter because now, the world knows that Linux has its share of security issues, and not just Windows or OSX.

    Sucks to be a one-sided Linux Zealot right?

    There's Always A Troll Lurking.... CJ -- 27/08/08 (in reply to #320110653)

    You're an idiot! Linux has always had security flaws just as Windows & OS X have. The difference is that Linux has always been open about it. The 1st comment was about the need to constantly have this sent to his/her RSS feed and not about his/her supposed bitterness over Linux having an issue. Grow up!

    Flaw is one thing... Anonymous -- 27/08/08 (in reply to #320110653)

    ....actively being exploited is another. While the first is common on any system Windows seems to have a worse track record on the second. It might also be worthwhile to look at the amount of damage that can be caused by the flaw and the ease of exploiting it. Windows comes up short on both of those as well.

    Billy Neo -- 27/08/08

    no OS or platform is perfect. ain't gonna' happen. (unless you use GodBSD, of course(: doesn't matter how many patches Linux is patched with, its still, by design, more secure than windblows will ever be. Linux was born on the network and designed accordingly. Windblows was designed as a desktop that can be everything to everybody. and it shows. i don't even remember what spyware is or what a virus/worm is anymore. and that's a great feeling. gotta' go now and update my antivirus---NOT!

    Misleading, sensationalized. Anonymous -- 27/08/08

    The headline says....

    Ubuntu today became the latest Linux vendor to patch a vulnerability in the open source operating system's kernel that could have left the door open for hackers to find their way into users' machines.

    It was a "local" exploit, so it only would have only left the door open for "users" to find their way into "users" machines. Or a hacker, with a user account, logged in locally to a machine to run something with escalated permissions.

    There are better linux kernel and application bugs out there to write about.

    no links? Anonymous -- 27/08/08

    What, no links? You mean after telling me about this scary vulnerability, you're going to make me google around to find out more details on the severity and other info?

    looking for the links Anonymous -- 27/08/08 (in reply to #320110674)

    I am wondering the same question. Where can I get more details about this vulnerability? Or at least tell me which kernel update is actually targeting this problem in Ubuntu.

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