Home / mailings [USN-2040-1] Linux kernel (Quantal HWE) vulnerabilities
Posted on 03 December 2013
Ubuntu Security==========================
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Ubuntu Security Notice USN-2040-1
December 03, 2013
linux-lts-quantal vulnerabilities
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A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 12.04 LTS
Summary:
Several security issues were fixed in the kernel.
Software Description:
- linux-lts-quantal: Linux hardware enablement kernel from Quantal
Details:
A flaw was discovered in the Linux kernel's dm snapshot facility. A remot=
e
authenticated user could exploit this flaw to obtain sensitive informatio=
n
or modify/corrupt data. (CVE-2013-4299)
Hannes Frederic Sowa discovered a flaw in the Linux kernel's UDP
Fragmenttation Offload (UFO). An unprivileged local user could exploit th=
is
flaw to cause a denial of service (system crash) or possibly gain
administrative privileges. (CVE-2013-4470)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 12.04 LTS:
linux-image-3.5.0-44-generic 3.5.0-44.67~precise1
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-2040-1
CVE-2013-4299, CVE-2013-4470
Package Information:
https://launchpad.net/ubuntu/+source/linux-lts-quantal/3.5.0-44.67~prec=
ise1
