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Sicherheit: Denial of Service in Linux
Aktuelle Meldungen Distributionen
Name: Denial of Service in Linux
ID: USN-1698-1
Distribution: Ubuntu
Plattformen: Ubuntu 12.04 LTS
Datum: Fr, 18. Januar 2013, 08:48
Referenzen: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-4530
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-5532
Applikationen: Linux

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==========================================================================
Ubuntu Security Notice USN-1698-1
January 18, 2013

linux-ti-omap4 vulnerabilities
==========================================================================

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

- Ubuntu 12.04 LTS

Summary:

Several security issues were fixed in the kernel.

Software Description:
- linux-ti-omap4: Linux kernel for OMAP4

Details:

A flaw was discovered in the Linux kernel's handling of script execution
when module loading is enabled. A local attacker could exploit this flaw to
cause a leak of kernel stack contents. (CVE-2012-4530)

Florian Weimer discovered that hypervkvpd, which is distributed in the
Linux kernel, was not correctly validating source addresses of netlink
packets. An untrusted local user can cause a denial of service by causing
hypervkvpd to exit. (CVE-2012-5532)

Update instructions:

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

Ubuntu 12.04 LTS:
linux-image-3.2.0-1424-omap4 3.2.0-1424.32

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-1698-1
CVE-2012-4530, CVE-2012-5532

Package Information:
https://launchpad.net/ubuntu/+source/linux-ti-omap4/3.2.0-1424.32


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