[USN-1876-1] Linux kernel vulnerabilities

[John Johansen]

==========================================================================
Ubuntu Security Notice USN-1876-1
June 14, 2013

linux 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: Linux kernel

Details:

Andrew Honig reported a flaw in the way KVM (Kernel-based Virtual Machine)
emulated the IOAPIC. A privileged guest user could exploit this flaw to
read host memory or cause a denial of service (crash the host).
(CVE-2013-1798)

An information leak was discovered in the Linux kernel's rcvmsg path for
ATM (Asynchronous Transfer Mode). A local user could exploit this flaw to
examine potentially sensitive information from the kernel's stack memory.
(CVE-2013-3222)

An information leak was discovered in the Linux kernel's recvmsg path for
ax25 address family. A local user could exploit this flaw to examine
potentially sensitive information from the kernel's stack memory.
(CVE-2013-3223)

An information leak was discovered in the Linux kernel's recvmsg path for
the bluetooth address family. A local user could exploit this flaw to
examine potentially sensitive information from the kernel's stack memory.
(CVE-2013-3224)

An information leak was discovered in the Linux kernel's bluetooth rfcomm
protocol support. A local user could exploit this flaw to examine
potentially sensitive information from the kernel's stack memory.
(CVE-2013-3225)

An information leak was discovered in the Linux kernel's IRDA (infrared)
support subsystem. A local user could exploit this flaw to examine
potentially sensitive information from the kernel's stack memory.
(CVE-2013-3228)

An information leak was discovered in the Linux kernel's s390 - z/VM
support. A local user could exploit this flaw to examine potentially
sensitive information from the kernel's stack memory. (CVE-2013-3229)

An information leak was discovered in the Linux kernel's llc (Logical Link
Layer 2) support. A local user could exploit this flaw to examine
potentially sensitive information from the kernel's stack memory.
(CVE-2013-3231)

An information leak was discovered in the Linux kernel's receive message
handling for the netrom address family. A local user could exploit this
flaw to obtain sensitive information from the kernel's stack memory.
(CVE-2013-3232)

An information leak was discovered in the Linux kernel's Rose X.25 protocol
layer. A local user could exploit this flaw to examine potentially
sensitive information from the kernel's stack memory. (CVE-2013-3234)

An information leak was discovered in the Linux kernel's TIPC (Transparent
Inter Process Communication) protocol implementation. A local user could
exploit this flaw to examine potentially sensitive information from the
kernel's stack memory. (CVE-2013-3235)

Update instructions:

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

Ubuntu 10.04 LTS:
  linux-image-2.6.32-48-386       2.6.32-48.110
  linux-image-2.6.32-48-generic   2.6.32-48.110
  linux-image-2.6.32-48-generic-pae  2.6.32-48.110
  linux-image-2.6.32-48-ia64      2.6.32-48.110
  linux-image-2.6.32-48-lpia      2.6.32-48.110
  linux-image-2.6.32-48-powerpc   2.6.32-48.110
  linux-image-2.6.32-48-powerpc-smp  2.6.32-48.110
  linux-image-2.6.32-48-powerpc64-smp  2.6.32-48.110
  linux-image-2.6.32-48-preempt   2.6.32-48.110
  linux-image-2.6.32-48-server    2.6.32-48.110
  linux-image-2.6.32-48-sparc64   2.6.32-48.110
  linux-image-2.6.32-48-sparc64-smp  2.6.32-48.110
  linux-image-2.6.32-48-versatile  2.6.32-48.110
  linux-image-2.6.32-48-virtual   2.6.32-48.110

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-1876-1
  CVE-2013-1798, CVE-2013-3222, CVE-2013-3223, CVE-2013-3224,
  CVE-2013-3225, CVE-2013-3228, CVE-2013-3229, CVE-2013-3231,
  CVE-2013-3232, CVE-2013-3234, CVE-2013-3235

Package Information:
  https://launchpad.net/ubuntu/+source/linux/2.6.32-48.110

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