USN-3292-1: Linux kernel vulnerability

Releases

• Ubuntu 16.10

Packages

• linux - Linux kernel
• linux-raspi2 - Linux kernel for Raspberry Pi 2

Details

Jason Donenfeld discovered a heap overflow in the MACsec module in the
Linux kernel. An attacker could use this to cause a denial of service
(system crash) or possibly execute arbitrary code.

Update instructions

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

Ubuntu 16.10

• linux-image-powerpc-smp - 4.8.0.52.64
• linux-image-powerpc-e500mc - 4.8.0.52.64
• linux-image-4.8.0-52-lowlatency - 4.8.0-52.55
• linux-image-generic-lpae - 4.8.0.52.64
• linux-image-4.8.0-52-generic - 4.8.0-52.55
• linux-image-4.8.0-52-generic-lpae - 4.8.0-52.55
• linux-image-4.8.0-52-powerpc64-emb - 4.8.0-52.55
• linux-image-generic - 4.8.0.52.64
• linux-image-4.8.0-52-powerpc-e500mc - 4.8.0-52.55
• linux-image-4.8.0-1036-raspi2 - 4.8.0-1036.39
• linux-image-lowlatency - 4.8.0.52.64
• linux-image-powerpc64-emb - 4.8.0.52.64
• linux-image-raspi2 - 4.8.0.1036.40
• linux-image-4.8.0-52-powerpc-smp - 4.8.0-52.55

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-2017-7477

Related notices

• USN-3292-2
• USN-3293-1