USN-1829-1: Linux kernel (EC2) vulnerabilities

16 May 2013

Several security issues were fixed in the kernel.

Releases

Packages

  • linux-ec2 - Linux kernel for EC2

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. (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

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

Ubuntu 10.04

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.

Related notices

  • USN-1649-1: linux-ti-omap4, linux-image-3.0.0-1218-omap4
  • USN-1811-1: linux-ti-omap4, linux-image-3.2.0-1430-omap4
  • USN-1645-1: linux-ti-omap4, linux-image-3.2.0-1422-omap4
  • USN-1671-1: linux-image-3.5.0-21-powerpc64-smp, linux-image-3.5.0-21-generic, linux, linux-image-3.5.0-21-powerpc-smp, linux-image-3.5.0-21-omap, linux-image-3.5.0-21-highbank
  • USN-1812-1: linux-image-3.5.0-28-generic, linux-lts-quantal
  • USN-1813-1: linux-image-3.5.0-28-generic, linux, linux-image-3.5.0-28-powerpc64-smp, linux-image-3.5.0-28-powerpc-smp, linux-image-3.5.0-28-highbank, linux-image-3.5.0-28-omap
  • USN-1652-1: linux-image-3.0.0-28-generic, linux-image-3.0.0-28-virtual, linux-lts-backport-oneiric, linux-image-3.0.0-28-server, linux-image-3.0.0-28-generic-pae
  • USN-1647-1: linux-ti-omap4, linux-image-3.5.0-215-omap4
  • USN-1648-1: linux-image-3.0.0-28-powerpc64-smp, linux-image-3.0.0-28-powerpc, linux, linux-image-3.0.0-28-generic, linux-image-3.0.0-28-virtual, linux-image-3.0.0-28-omap, linux-image-3.0.0-28-server, linux-image-3.0.0-28-powerpc-smp, linux-image-3.0.0-28-generic-pae
  • USN-1646-1: linux-image-3.5.0-19-highbank, linux-image-3.5.0-19-powerpc64-smp, linux, linux-image-3.5.0-19-powerpc-smp, linux-image-3.5.0-19-omap, linux-image-3.5.0-19-generic
  • USN-1673-1: linux-ti-omap4, linux-image-3.5.0-216-omap4
  • USN-1704-1: linux-image-3.5.0-22-generic, linux-lts-quantal
  • USN-1824-1: linux-image-2.6.32-47-virtual, linux-image-2.6.32-47-386, linux-image-2.6.32-47-powerpc-smp, linux-image-2.6.32-47-sparc64-smp, linux, linux-image-2.6.32-47-powerpc64-smp, linux-image-2.6.32-47-server, linux-image-2.6.32-47-sparc64, linux-image-2.6.32-47-lpia, linux-image-2.6.32-47-powerpc, linux-image-2.6.32-47-generic, linux-image-2.6.32-47-ia64, linux-image-2.6.32-47-preempt, linux-image-2.6.32-47-versatile, linux-image-2.6.32-47-generic-pae
  • USN-1644-1: linux-image-3.2.0-34-highbank, linux-image-3.2.0-34-omap, linux, linux-image-3.2.0-34-generic-pae, linux-image-3.2.0-34-powerpc64-smp, linux-image-3.2.0-34-generic, linux-image-3.2.0-34-powerpc-smp, linux-image-3.2.0-34-virtual
  • USN-1809-1: linux-image-3.2.0-41-highbank, linux, linux-image-3.2.0-41-generic-pae, linux-image-3.2.0-41-powerpc64-smp, linux-image-3.2.0-41-virtual, linux-image-3.2.0-41-powerpc-smp, linux-image-3.2.0-41-generic, linux-image-3.2.0-41-omap
  • USN-1814-1: linux-ti-omap4, linux-image-3.5.0-223-omap4