USN-3404-2: Linux kernel (HWE) vulnerability

Releases

• Ubuntu 16.04 ESM

Packages

• linux-hwe - Linux hardware enablement (HWE) kernel

Details

USN-3404-1 fixed a vulnerability in the Linux kernel for Ubuntu 17.04.
This update provides the corresponding updates for the Linux Hardware
Enablement (HWE) kernel from Ubuntu 17.04 for Ubuntu 16.04 LTS.

A reference count bug was discovered in the Linux kernel ipx protocol
stack. A local attacker could exploit this flaw to cause a denial of
service or possibly other unspecified problems.

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 16.04

• linux-image-4.10.0-33-generic - 4.10.0-33.37~16.04.1
• linux-image-4.10.0-33-generic-lpae - 4.10.0-33.37~16.04.1
• linux-image-4.10.0-33-lowlatency - 4.10.0-33.37~16.04.1

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.
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

• CVE-2017-7487

Related notices

• USN-3406-1
• USN-3344-2
• USN-3344-1
• USN-3406-2
• USN-3404-1