Home / vulnerabilities Ubuntu Security Notice USN-2858-3
Posted on 07 January 2016
Source : packetstormsecurity.org Link
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Ubuntu Security Notice USN-2858-3
January 05, 2016
linux-raspi2 vulnerability
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A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 15.10
Summary:
The system could be made to run programs as an administrator.
Software Description:
- linux-raspi2: Linux kernel for Raspberry Pi 2
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 15.10:
linux-image-4.2.0-1018-raspi2 4.2.0-1018.25
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-2858-3
http://www.ubuntu.com/usn/usn-2858-1
CVE-2015-8660
Package Information:
https://launchpad.net/ubuntu/+source/linux-raspi2/4.2.0-1018.25
