Ubuntu Security Notice USN-2734-1
3rd September, 2015
linux vulnerability
A security issue affects these releases of Ubuntu and its
derivatives:
- Ubuntu 14.04 LTS
Summary
The system could be made to crash or run programs as an administrator.
Software description
- linux
– Linux kernel
Details
It was discovered that an integer overflow error existed in the SCSI
generic (sg) driver in the Linux kernel. A local attacker with write
permission to a SCSI generic device could use this to cause a denial of
service (system crash) or potentially escalate their privileges.
Update instructions
The problem can be corrected by updating your system to the following
package version:
- Ubuntu 14.04 LTS:
-
linux-image-3.13.0-63-powerpc64-emb
3.13.0-63.103
-
linux-image-3.13.0-63-lowlatency
3.13.0-63.103
-
linux-image-3.13.0-63-generic
3.13.0-63.103
-
linux-image-3.13.0-63-generic-lpae
3.13.0-63.103
-
linux-image-3.13.0-63-powerpc-e500mc
3.13.0-63.103
-
linux-image-3.13.0-63-powerpc-e500
3.13.0-63.103
-
linux-image-3.13.0-63-powerpc64-smp
3.13.0-63.103
-
linux-image-3.13.0-63-powerpc-smp
3.13.0-63.103
To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.
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.