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Sicherheit: Zwei Probleme in Linux
Aktuelle Meldungen Distributionen
Name: Zwei Probleme in Linux
ID: USN-1534-1
Distribution: Ubuntu
Plattformen: Ubuntu 10.04 LTS
Datum: Sa, 11. August 2012, 08:41
Referenzen: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-2136
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-2390
Applikationen: Linux

Originalnachricht

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==========================================================================
Ubuntu Security Notice USN-1534-1
August 10, 2012

linux-ec2 vulnerabilities
==========================================================================

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

- Ubuntu 10.04 LTS

Summary:

Several security issues were fixed in the kernel.

Software Description:
- linux-ec2: Linux kernel for EC2

Details:

An error was discovered in the Linux kernel's network TUN/TAP device
implementation. A local user with access to the TUN/TAP interface (which is
not available to unprivileged users until granted by a root user) could
exploit this flaw to crash the system or potential gain administrative
privileges. (CVE-2012-2136)

An error was discovered in the Linux kernel's memory subsystem (hugetlb).
An unprivileged local user could exploit this flaw to cause a denial of
service (crash the system). (CVE-2012-2390)

Update instructions:

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

Ubuntu 10.04 LTS:
linux-image-2.6.32-347-ec2 2.6.32-347.52

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:
http://www.ubuntu.com/usn/usn-1534-1
CVE-2012-2136, CVE-2012-2390

Package Information:
https://launchpad.net/ubuntu/+source/linux-ec2/2.6.32-347.52


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