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[USN-2264-1] Linux kernel vulnerabilities

Posted on 27 June 2014
Ubuntu Security

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Ubuntu Security Notice USN-2264-1
June 27, 2014

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

- Ubuntu 13.10

Summary:

Several security issues were fixed in the kernel.

Software Description:
- linux: Linux kernel

Details:

Salva Peir=C3=B3 discovered an information leak in the Linux kernel's med=
ia-
device driver. A local attacker could exploit this flaw to obtain sensiti=
ve
information from kernel memory. (CVE-2014-1739)

A bounds check error was discovered in the socket filter subsystem of the=

Linux kernel. A local user could exploit this flaw to cause a denial of
service (system crash) via crafted BPF instructions. (CVE-2014-3144)

A remainder calculation error was discovered in the socket filter subsyst=
em
of the Linux kernel. A local user could exploit this flaw to cause a deni=
al
of service (system crash) via crafted BPF instructions. (CVE-2014-3145)

Update instructions:

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

Ubuntu 13.10:
linux-image-3.11.0-24-generic 3.11.0-24.41
linux-image-3.11.0-24-generic-lpae 3.11.0-24.41

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-2264-1
CVE-2014-1739, CVE-2014-3144, CVE-2014-3145

Package Information:
https://launchpad.net/ubuntu/+source/linux/3.11.0-24.41

 

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