Home / vulnerabilities Ubuntu Security Notice USN-2644-1
Posted on 16 June 2015
Source : packetstormsecurity.org Link
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Ubuntu Security Notice USN-2644-1
June 15, 2015
linux-lts-utopic vulnerability
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A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 14.04 LTS
Summary:
The system could be made to run programs as an administrator.
Software Description:
- linux-lts-utopic: Linux hardware enablement kernel from Utopic
Details:
Philip Pettersson discovered a privilege escalation when using overlayfs
mounts inside of user namespaces. A local user could exploit this flaw to
gain administrative privileges on the system.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 14.04 LTS:
linux-image-3.16.0-41-generic 3.16.0-41.55~14.04.1
linux-image-3.16.0-41-generic-lpae 3.16.0-41.55~14.04.1
linux-image-3.16.0-41-lowlatency 3.16.0-41.55~14.04.1
linux-image-3.16.0-41-powerpc-e500mc 3.16.0-41.55~14.04.1
linux-image-3.16.0-41-powerpc-smp 3.16.0-41.55~14.04.1
linux-image-3.16.0-41-powerpc64-emb 3.16.0-41.55~14.04.1
linux-image-3.16.0-41-powerpc64-smp 3.16.0-41.55~14.04.1
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.
References:
http://www.ubuntu.com/usn/usn-2644-1
CVE-2015-1328
Package Information:
https://launchpad.net/ubuntu/+source/linux-lts-utopic/3.16.0-41.55~14.04.1
