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[USN-2490-1] Linux kernel vulnerabilities

Posted on 04 February 2015
Ubuntu Security

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Ubuntu Security Notice USN-2490-1
February 04, 2015

linux vulnerabilities
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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:

Andy Lutomirski discovered an information leak in the Linux kernel's Thre=
ad
Local Storage (TLS) implementation allowing users to bypass the espfix to=

obtain information that could be used to bypass the Address Space Layout
Randomization (ASLR) protection mechanism. A local user could exploit thi=
s
flaw to obtain potentially sensitive information from kernel memory.
(CVE-2014-8133)

Prasad J Pandit reported a flaw in the rock_continue function of the Linu=
x
kernel's ISO 9660 CDROM file system. A local user could exploit this flaw=

to cause a denial of service (system crash or hang). (CVE-2014-9420)

Update instructions:

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

Ubuntu 10.04 LTS:
linux-image-2.6.32-72-386 2.6.32-72.139
linux-image-2.6.32-72-generic 2.6.32-72.139
linux-image-2.6.32-72-generic-pae 2.6.32-72.139
linux-image-2.6.32-72-ia64 2.6.32-72.139
linux-image-2.6.32-72-lpia 2.6.32-72.139
linux-image-2.6.32-72-powerpc 2.6.32-72.139
linux-image-2.6.32-72-powerpc-smp 2.6.32-72.139
linux-image-2.6.32-72-powerpc64-smp 2.6.32-72.139
linux-image-2.6.32-72-preempt 2.6.32-72.139
linux-image-2.6.32-72-server 2.6.32-72.139
linux-image-2.6.32-72-sparc64 2.6.32-72.139
linux-image-2.6.32-72-sparc64-smp 2.6.32-72.139
linux-image-2.6.32-72-versatile 2.6.32-72.139
linux-image-2.6.32-72-virtual 2.6.32-72.139

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 automaticall=
y
perform this as well.

References:
http://www.ubuntu.com/usn/usn-2490-1
CVE-2014-8133, CVE-2014-9420

Package Information:
https://launchpad.net/ubuntu/+source/linux/2.6.32-72.139

 

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