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Ubuntu Security Notice USN-1837-1

Ubuntu Security Notice USN-1837-1
Posted May 24, 2013
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1837-1 - 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. 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. Various other issues were also addressed.

tags | advisory, kernel, local, crypto
systems | linux, ubuntu
advisories | CVE-2013-3076, CVE-2013-3222, CVE-2013-3223, CVE-2013-3224, CVE-2013-3225, CVE-2013-3226, CVE-2013-3227, CVE-2013-3228, CVE-2013-3229, CVE-2013-3230, CVE-2013-3231, CVE-2013-3233, CVE-2013-3234, CVE-2013-3235, CVE-2013-3076, CVE-2013-3222, CVE-2013-3223, CVE-2013-3224, CVE-2013-3225, CVE-2013-3226, CVE-2013-3227, CVE-2013-3228, CVE-2013-3229, CVE-2013-3230, CVE-2013-3231, CVE-2013-3233, CVE-2013-3234, CVE-2013-3235
MD5 | 4e1c985d29b403f799288923bc9137e9

Ubuntu Security Notice USN-1837-1

Change Mirror Download
============================================================================
Ubuntu Security Notice USN-1837-1
May 24, 2013

linux vulnerabilities
============================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 13.04

Summary:

Several security issues were fixed in the kernel.

Software Description:
- linux: Linux kernel

Details:

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 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:
linux-image-3.8.0-22-generic 3.8.0-22.33

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-1837-1
CVE-2013-3076, CVE-2013-3222, CVE-2013-3223, CVE-2013-3224,
CVE-2013-3225, CVE-2013-3226, CVE-2013-3227, CVE-2013-3228,
CVE-2013-3229, CVE-2013-3230, CVE-2013-3231, CVE-2013-3233,
CVE-2013-3234, CVE-2013-3235

Package Information:
https://launchpad.net/ubuntu/+source/linux/3.8.0-22.33
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