USN-1837-1: Linux kernel vulnerabilities

24 May 2013

Several security issues were fixed in the kernel.

Releases

Packages

  • linux - Linux kernel

Details

An information leak was discovered in the Linux kernel's tkill and tgkill
system calls when used from compat processes. A local user could exploit
this flaw to examine potentially sensitive kernel memory. (CVE-2013-2141)

A flaw was discovered in the Linux kernel's perf events subsystem for Intel
Sandy Bridge and Ivy Bridge processors. A local user could exploit this
flaw to cause a denial of service (system crash). (CVE-2013-2146)

An information leak was discovered in the Linux kernel's crypto API. A
local user could exploit this flaw to examine potentially sensitive
information from the kernel's stack memory. (CVE-2013-3076)

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 bluetooth SCO
sockets implementation. A local user could exploit this flaw to examine
potentially sensitive information from the kernel's stack memory.
(CVE-2013-3226)

An information leak was discovered in the Linux kernel's CAIF protocol
implementation. A local user could exploit this flaw to examine potentially
sensitive information from the kernel's stack memory. (CVE-2013-3227)

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 l2tp (Layer Two
Tunneling Protocol) implementation. A local user could exploit this flaw to
examine potentially sensitive information from the kernel's stack memory.
(CVE-2013-3230)

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 nfc (near field
communication) support. A local user could exploit this flaw to examine
potentially sensitive information from the kernel's stack memory.
(CVE-2013-3233)

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 13.04

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-1876-1: linux-image-2.6.32-48-preempt, linux-image-2.6.32-48-powerpc-smp, linux-image-2.6.32-48-powerpc, linux-image-2.6.32-48-lpia, linux-image-2.6.32-48-386, linux-image-2.6.32-48-powerpc64-smp, linux-image-2.6.32-48-generic, linux-image-2.6.32-48-virtual, linux, linux-image-2.6.32-48-server, linux-image-2.6.32-48-sparc64, linux-image-2.6.32-48-versatile, linux-image-2.6.32-48-generic-pae, linux-image-2.6.32-48-sparc64-smp, linux-image-2.6.32-48-ia64
  • USN-1849-1: linux-image-3.8.0-23-generic, linux-lts-raring
  • USN-1833-1: linux-image-3.2.0-44-virtual, linux-image-3.2.0-44-powerpc-smp, linux-image-3.2.0-44-omap, linux-image-3.2.0-44-powerpc64-smp, linux-image-3.2.0-44-highbank, linux-image-3.2.0-44-generic, linux, linux-image-3.2.0-44-generic-pae
  • USN-1881-1: linux-image-3.5.0-34-highbank, linux-image-3.5.0-34-generic, linux-image-3.5.0-34-omap, linux-image-3.5.0-34-powerpc64-smp, linux, linux-image-3.5.0-34-powerpc-smp
  • USN-1879-1: linux-ti-omap4, linux-image-3.2.0-1433-omap4
  • USN-1880-1: linux-lts-quantal, linux-image-3.5.0-34-generic
  • USN-1877-1: linux-image-2.6.32-353-ec2, linux-ec2
  • USN-1839-1: linux-image-3.2.0-1432-omap4, linux-ti-omap4
  • USN-1882-1: linux-ti-omap4, linux-image-3.5.0-226-omap4
  • USN-1883-1: linux-ti-omap4, linux-image-3.5.0-226-omap4
  • USN-1878-1: linux-image-3.2.0-48-generic, linux-image-3.2.0-48-virtual, linux-image-3.2.0-48-powerpc-smp, linux, linux-image-3.2.0-48-powerpc64-smp, linux-image-3.2.0-48-omap, linux-image-3.2.0-48-generic-pae, linux-image-3.2.0-48-highbank
  • USN-1899-1: linux-image-2.6.32-49-386, linux-image-2.6.32-49-powerpc-smp, linux-image-2.6.32-49-versatile, linux-image-2.6.32-49-ia64, linux-image-2.6.32-49-lpia, linux-image-2.6.32-49-generic-pae, linux-image-2.6.32-49-generic, linux-image-2.6.32-49-preempt, linux-image-2.6.32-49-server, linux-image-2.6.32-49-sparc64, linux, linux-image-2.6.32-49-virtual, linux-image-2.6.32-49-powerpc, linux-image-2.6.32-49-sparc64-smp, linux-image-2.6.32-49-powerpc64-smp
  • USN-1900-1: linux-image-2.6.32-354-ec2, linux-ec2