==========================================================================
Ubuntu Security Notice USN-3147-1
November 30, 2016
linux vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
– Ubuntu 16.10
Summary:
Several security issues were fixed in the kernel.
Software Description:
– linux: Linux kernel
Details:
Andreas Gruenbacher and Jan Kara discovered that the filesystem
implementation in the Linux kernel did not clear the setgid bit during a
setxattr call. A local attacker could use this to possibly elevate group
privileges. (CVE-2016-7097)
Marco Grassi discovered that the driver for Areca RAID Controllers in the
Linux kernel did not properly validate control messages. A local attacker
could use this to cause a denial of service (system crash) or possibly gain
privileges. (CVE-2016-7425)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 16.10:
linux-image-4.8.0-28-generic 4.8.0-28.30
linux-image-4.8.0-28-generic-lpae 4.8.0-28.30
linux-image-4.8.0-28-lowlatency 4.8.0-28.30
linux-image-4.8.0-28-powerpc-e500mc 4.8.0-28.30
linux-image-4.8.0-28-powerpc-smp 4.8.0-28.30
linux-image-4.8.0-28-powerpc64-emb 4.8.0-28.30
linux-image-generic 4.8.0.28.37
linux-image-generic-lpae 4.8.0.28.37
linux-image-lowlatency 4.8.0.28.37
linux-image-powerpc-e500mc 4.8.0.28.37
linux-image-powerpc-smp 4.8.0.28.37
linux-image-powerpc64-emb 4.8.0.28.37
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-3147-1
CVE-2016-7097, CVE-2016-7425
Package Information:
https://launchpad.net/ubuntu/+source/linux/4.8.0-28.30
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