1. Ubuntu Security Notices
  2. USN-1824-1

USN-1824-1: Linux kernel vulnerabilities

Publication date

15 May 2013

Overview

Several security issues were fixed in the kernel.

Releases

Packages

Details

Mathias Krause discovered an information leak in the Linux kernel's ISO
9660 CDROM file system driver. A local user could exploit this flaw to
examine some of the kernel's heap memory. (CVE-2012-6549)

Mathias Krause discovered a flaw in xfrm_user in the Linux kernel. A local
attacker with NET_ADMIN capability could potentially exploit this flaw to
escalate privileges. (CVE-2013-1826)

A buffer overflow was discovered in the Linux Kernel's USB subsystem for
devices reporting the cdc-wdm class. A specially crafted USB device when
plugged-in could cause a denial of service (system crash) or possibly
execute arbitrary code. (CVE-2013-1860)

An information leak was discovered in the Linux kernel's /dev/dvb device. A
local user could exploit this flaw to obtain sensitive information from the
kernel's stack memory. (

Mathias Krause discovered an information leak in the Linux kernel's ISO
9660 CDROM file system driver. A local user could exploit this flaw to
examine some of the kernel's heap memory. (CVE-2012-6549)

Mathias Krause discovered a flaw in xfrm_user in the Linux kernel. A local
attacker with NET_ADMIN capability could potentially exploit this flaw to
escalate privileges. (CVE-2013-1826)

A buffer overflow was discovered in the Linux Kernel's USB subsystem for
devices reporting the cdc-wdm class. A specially crafted USB device when
plugged-in could cause a denial of service (system crash) or possibly
execute arbitrary code. (CVE-2013-1860)

An information leak was discovered in the Linux kernel's /dev/dvb device. A
local user could exploit this flaw to obtain sensitive information from the
kernel's stack memory. (CVE-2013-1928)

An information leak in the Linux kernel's dcb netlink interface was
discovered. A local user could obtain sensitive information by examining
kernel stack memory. (CVE-2013-2634)

Update instructions

After a standard system update you need to reboot your computer to make all the necessary changes.

Learn more about how to get the fixes.

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.

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

Ubuntu Release Package Version
10.04 lucid linux-image-2.6.32-47-386 –  2.6.32-47.109
linux-image-2.6.32-47-lpia –  2.6.32-47.109
linux-image-2.6.32-47-ia64 –  2.6.32-47.109
linux-image-2.6.32-47-generic –  2.6.32-47.109
linux-image-2.6.32-47-versatile –  2.6.32-47.109
linux-image-2.6.32-47-server –  2.6.32-47.109
linux-image-2.6.32-47-powerpc64-smp –  2.6.32-47.109
linux-image-2.6.32-47-generic-pae –  2.6.32-47.109
linux-image-2.6.32-47-powerpc-smp –  2.6.32-47.109
linux-image-2.6.32-47-virtual –  2.6.32-47.109
linux-image-2.6.32-47-sparc64-smp –  2.6.32-47.109
linux-image-2.6.32-47-powerpc –  2.6.32-47.109
linux-image-2.6.32-47-preempt –  2.6.32-47.109
linux-image-2.6.32-47-sparc64 –  2.6.32-47.109

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References

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