USN-2283-1: Linux kernel vulnerabilities
16 July 2014
Several security issues were fixed in the kernel.
Releases
Packages
- linux - Linux kernel
Details
Sasha Levin reported a flaw in the Linux kernel's point-to-point protocol
(PPP) when used with the Layer Two Tunneling Protocol (L2TP). A local user
could exploit this flaw to gain administrative privileges. (CVE-2014-4943)
Michael S. Tsirkin discovered an information leak in the Linux kernel's
segmentation of skbs when using the zerocopy feature of vhost-net. A local
attacker could exploit this flaw to gain potentially sensitive information
from kernel memory. (CVE-2014-0131)
Update instructions
The problem can be corrected by updating your system to the following package versions:
Ubuntu 12.04
-
linux-image-3.2.0-67-highbank
-
3.2.0-67.101
-
linux-image-3.2.0-67-generic-pae
-
3.2.0-67.101
-
linux-image-3.2.0-67-powerpc64-smp
-
3.2.0-67.101
-
linux-image-3.2.0-67-omap
-
3.2.0-67.101
-
linux-image-3.2.0-67-generic
-
3.2.0-67.101
-
linux-image-3.2.0-67-powerpc-smp
-
3.2.0-67.101
-
linux-image-3.2.0-67-virtual
-
3.2.0-67.101
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.