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USN-1808-1: Linux kernel (EC2) vulnerabilities

25 April 2013

Several security issues were fixed in the kernel.

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Releases

Packages

Details

Mathias Krause discovered an information leak in the Linux kernel's
getsockname implementation for Logical Link Layer (llc) sockets. A local
user could exploit this flaw to examine some of the kernel's stack memory.
(CVE-2012-6542)

Mathias Krause discovered information leaks in the Linux kernel's Bluetooth
Logical Link Control and Adaptation Protocol (L2CAP) implementation. A
local user could exploit these flaws to examine some of the kernel's stack
memory. (CVE-2012-6544)

Mathias Krause discovered information leaks in the Linux kernel's Bluetooth
RFCOMM protocol implementation. A local user could exploit these flaws to
examine parts of kernel memory. (CVE-2012-6545)

Mathias Krause discovered information leaks in the Linux kernel's
Asynchronous Transfer Mode (ATM) networking stack. A local user could
exploit these flaws to examine some parts of kernel memory. (CVE-2012-6546)

Mathias Krause discovered an information leak in the Linux kernel's UDF
file system implementation. A local user could exploit this flaw to examine
some of the kernel's heap memory. (CVE-2012-6548)

Andrew Jones discovered a flaw with the xen_iret function in Linux kernel's
Xen virtualizeation. In the 32-bit Xen paravirt platform an unprivileged
guest OS user could exploit this flaw to cause a denial of service (crash
the system) or gain guest OS privilege. (CVE-2013-0228)

An information leak was discovered in the Linux kernel's Bluetooth stack
when HIDP (Human Interface Device Protocol) support is enabled. A local
unprivileged user could exploit this flaw to cause an information leak from
the kernel. (CVE-2013-0349)

A flaw was discovered in the Edgeort USB serial converter driver when the
device is disconnected while it is in use. A local user could exploit this
flaw to cause a denial of service (system crash). (CVE-2013-1774)

Andrew Honig discovered a flaw in guest OS time updates in the Linux
kernel's KVM (Kernel-based Virtual Machine). A privileged guest user could
exploit this flaw to cause a denial of service (crash host system) or
potential escalate privilege to the host kernel level. (CVE-2013-1796)

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Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

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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.

References

Related notices

  • USN-1648-1: linux, linux-image-3.0.0-28-omap, linux-image-3.0.0-28-generic-pae, linux-image-3.0.0-28-powerpc, linux-image-3.0.0-28-powerpc-smp, linux-image-3.0.0-28-powerpc64-smp, linux-image-3.0.0-28-server, linux-image-3.0.0-28-generic, linux-image-3.0.0-28-virtual
  • USN-1599-1: linux-ti-omap4, linux-image-3.2.0-1420-omap4
  • USN-1649-1: linux-ti-omap4, linux-image-3.0.0-1218-omap4
  • USN-1610-1: linux-image-3.2.0-32-generic, linux, linux-image-3.2.0-32-powerpc-smp, linux-image-3.2.0-32-powerpc64-smp, linux-image-3.2.0-32-virtual, linux-image-3.2.0-32-omap, linux-image-3.2.0-32-generic-pae, linux-image-3.2.0-32-highbank
  • USN-1805-1: linux-image-2.6.32-46-ia64, linux-image-2.6.32-46-lpia, linux-image-2.6.32-46-powerpc64-smp, linux-image-2.6.32-46-generic-pae, linux, linux-image-2.6.32-46-sparc64-smp, linux-image-2.6.32-46-server, linux-image-2.6.32-46-generic, linux-image-2.6.32-46-powerpc, linux-image-2.6.32-46-sparc64, linux-image-2.6.32-46-powerpc-smp, linux-image-2.6.32-46-versatile, linux-image-2.6.32-46-virtual, linux-image-2.6.32-46-386, linux-image-2.6.32-46-preempt
  • USN-1652-1: linux-image-3.0.0-28-generic-pae, linux-image-3.0.0-28-server, linux-lts-backport-oneiric, linux-image-3.0.0-28-virtual, linux-image-3.0.0-28-generic
  • USN-1812-1: linux-image-3.5.0-28-generic, linux-lts-quantal
  • USN-1809-1: linux-image-3.2.0-41-powerpc64-smp, linux-image-3.2.0-41-generic-pae, linux-image-3.2.0-41-omap, linux-image-3.2.0-41-powerpc-smp, linux, linux-image-3.2.0-41-generic, linux-image-3.2.0-41-highbank, linux-image-3.2.0-41-virtual
  • USN-1813-1: linux-image-3.5.0-28-omap, linux, linux-image-3.5.0-28-generic, linux-image-3.5.0-28-powerpc64-smp, linux-image-3.5.0-28-highbank, linux-image-3.5.0-28-powerpc-smp
  • USN-1814-1: linux-ti-omap4, linux-image-3.5.0-223-omap4
  • USN-1811-1: linux-ti-omap4, linux-image-3.2.0-1430-omap4
  • USN-1767-1: linux-image-3.2.0-39-omap, linux-image-3.2.0-39-powerpc-smp, linux-image-3.2.0-39-generic, linux, linux-image-3.2.0-39-generic-pae, linux-image-3.2.0-39-virtual, linux-image-3.2.0-39-powerpc64-smp, linux-image-3.2.0-39-highbank
  • USN-1781-1: linux-image-3.2.0-1427-omap4, linux-ti-omap4
  • USN-1796-1: linux-image-3.5.0-27-omap, linux, linux-image-3.5.0-27-highbank, linux-image-3.5.0-27-powerpc64-smp, linux-image-3.5.0-27-powerpc-smp, linux-image-3.5.0-27-generic
  • USN-1756-1: linux-image-3.0.0-32-generic, linux-image-3.0.0-32-powerpc, linux, linux-image-3.0.0-32-omap, linux-image-3.0.0-32-virtual, linux-image-3.0.0-32-server, linux-image-3.0.0-32-powerpc-smp, linux-image-3.0.0-32-powerpc64-smp, linux-image-3.0.0-32-generic-pae
  • USN-1795-1: linux-image-3.5.0-27-generic, linux-lts-quantal
  • USN-1797-1: linux-ti-omap4, linux-image-3.5.0-222-omap4
  • USN-1760-1: linux-image-3.0.0-32-generic, linux-image-3.0.0-32-virtual, linux-lts-backport-oneiric, linux-image-3.0.0-32-server, linux-image-3.0.0-32-generic-pae
  • USN-1778-1: linux-ti-omap4, linux-image-3.0.0-1222-omap4
  • USN-1769-1: linux-image-3.5.0-26-powerpc-smp, linux-image-3.5.0-26-highbank, linux, linux-image-3.5.0-26-generic, linux-image-3.5.0-26-omap, linux-image-3.5.0-26-powerpc64-smp
  • USN-1774-1: linux-ti-omap4, linux-image-3.5.0-221-omap4
  • USN-1768-1: linux-image-3.5.0-26-generic, linux-lts-quantal
  • USN-1743-1: linux-image-3.5.0-25-generic, linux-lts-quantal
  • USN-1745-1: linux-ti-omap4, linux-image-3.5.0-220-omap4
  • USN-1744-1: linux-image-3.5.0-25-highbank, linux, linux-image-3.5.0-25-powerpc64-smp, linux-image-3.5.0-25-powerpc-smp, linux-image-3.5.0-25-omap, linux-image-3.5.0-25-generic

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Further reading