USN-2717-1: Linux kernel (Utopic HWE) vulnerability

Releases

• Ubuntu 14.04 ESM

Packages

• 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 versions:

Ubuntu 14.04

• 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-lowlatency - 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-powerpc-smp - 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-powerpc64-smp - 3.16.0-46.62~14.04.1

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

• CVE-2015-3212

Related notices

• USN-2713-1: linux, linux-image-3.2.0-89-powerpc-smp, linux-image-3.2.0-89-virtual, linux-image-3.2.0-89-highbank, linux-image-3.2.0-89-powerpc64-smp, linux-image-3.2.0-89-omap, linux-image-3.2.0-89-generic, linux-image-3.2.0-89-generic-pae
• USN-2719-1: linux, linux-image-3.19.0-26-powerpc64-emb, linux-image-3.19.0-26-powerpc-e500mc, linux-image-3.19.0-26-generic-lpae, linux-image-3.19.0-26-powerpc64-smp, linux-image-3.19.0-26-powerpc-smp, linux-image-3.19.0-26-lowlatency, linux-image-3.19.0-26-generic
• USN-2715-1: linux-lts-trusty, linux-image-3.13.0-62-generic-lpae, linux-image-3.13.0-62-generic
• USN-2716-1: linux, linux-image-extra-3.13.0-62-generic, linux-image-3.13.0-62-powerpc64-smp, linux-image-3.13.0-62-powerpc-e500, linux-image-3.13.0-62-powerpc-e500mc, linux-image-3.13.0-62-powerpc64-emb, linux-image-3.13.0-62-powerpc-smp, linux-image-3.13.0-62-lowlatency, linux-image-3.13.0-62-generic-lpae, linux-image-3.13.0-62-generic
• USN-2718-1: linux-image-3.19.0-26-powerpc64-emb, linux-image-extra-3.19.0-26-generic, linux-image-3.19.0-26-powerpc-e500mc, linux-image-3.19.0-26-generic-lpae, linux-image-3.19.0-26-powerpc64-smp, linux-image-3.19.0-26-powerpc-smp, linux-lts-vivid, linux-image-3.19.0-26-lowlatency, linux-image-3.19.0-26-generic
• USN-2714-1: linux-ti-omap4, linux-image-3.2.0-1469-omap4