Home / vulnerabilities Ubuntu Security Notice USN-2857-1
Posted on 07 January 2016
Source : packetstormsecurity.org Link
==========================================================================
Ubuntu Security Notice USN-2857-1
January 05, 2016
linux vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 15.04
Summary:
The system could be made to run programs as an administrator.
Software Description:
- linux: Linux kernel
Details:
Nathan Williams discovered that overlayfs in the Linux kernel incorrectly
handled setattr operations. A local unprivileged attacker could use this to
create files with administrative permission attributes and execute
arbitrary code with elevated privileges.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 15.04:
linux-image-3.19.0-43-generic 3.19.0-43.49
linux-image-3.19.0-43-generic-lpae 3.19.0-43.49
linux-image-3.19.0-43-lowlatency 3.19.0-43.49
linux-image-3.19.0-43-powerpc-e500mc 3.19.0-43.49
linux-image-3.19.0-43-powerpc-smp 3.19.0-43.49
linux-image-3.19.0-43-powerpc64-emb 3.19.0-43.49
linux-image-3.19.0-43-powerpc64-smp 3.19.0-43.49
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.
Unless you manually uninstalled the standard kernel metapackages
(e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual,
linux-powerpc), a standard system upgrade will automatically perform
this as well.
References:
http://www.ubuntu.com/usn/usn-2857-1
CVE-2015-8660
Package Information:
https://launchpad.net/ubuntu/+source/linux/3.19.0-43.49
