Ubuntu Security Notice USN-2717-1
17th August, 2015
linux-lts-utopic vulnerability
A security issue affects these releases of Ubuntu and its
derivatives:
- Ubuntu 14.04 LTS
Summary
The system could be made to crash under certain conditions.
Software description
- linux-lts-utopic
– Linux hardware enablement kernel from Utopic
Details
Marcelo Ricardo Leitner discovered a race condition in the Linux kernel’s
SCTP address configuration lists when using Address Configuration Change
(ASCONF) options on a socket. An unprivileged local user could exploit this
flaw to cause a denial of service (system crash).
Update instructions
The problem can be corrected by updating your system to the following
package version:
- Ubuntu 14.04 LTS:
-
linux-image-3.16.0-46-powerpc64-smp
3.16.0-46.62~14.04.1
-
linux-image-3.16.0-46-lowlatency
3.16.0-46.62~14.04.1
-
linux-image-3.16.0-46-generic
3.16.0-46.62~14.04.1
-
linux-image-3.16.0-46-generic-lpae
3.16.0-46.62~14.04.1
-
linux-image-3.16.0-46-powerpc-e500mc
3.16.0-46.62~14.04.1
-
linux-image-3.16.0-46-powerpc64-emb
3.16.0-46.62~14.04.1
-
linux-image-3.16.0-46-powerpc-smp
3.16.0-46.62~14.04.1
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.