USN-3630-1: Linux kernel vulnerability

Releases

• Ubuntu 17.10

Packages

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

Details

It was discovered that the Broadcom UniMAC MDIO bus controller driver in
the Linux kernel did not properly validate device resources. A local
attacker could use this 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 17.10

• linux-image-4.13.0-1017-raspi2 - 4.13.0-1017.18
• linux-image-generic - 4.13.0.39.42
• linux-image-generic-lpae - 4.13.0.39.42
• linux-image-4.13.0-39-generic-lpae - 4.13.0-39.44
• linux-image-4.13.0-39-generic - 4.13.0-39.44
• linux-image-4.13.0-39-lowlatency - 4.13.0-39.44
• linux-image-lowlatency - 4.13.0.39.42
• linux-image-raspi2 - 4.13.0.1017.15

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-2018-8043

Related notices

• USN-3630-2: linux-gcp, linux-image-4.13.0-1024-oem, linux-oem, linux-image-4.13.0-39-generic-lpae, linux-image-4.13.0-39-generic, linux-image-4.13.0-39-lowlatency, linux-image-4.13.0-1013-gcp, linux-image-extra-4.13.0-39-generic, linux-image-extra-4.13.0-1013-gcp, linux-hwe
• USN-3619-2: linux-lts-xenial, linux-image-4.4.0-1016-aws, linux-image-4.4.0-119-powerpc-smp, linux-image-extra-4.4.0-119-generic, linux-image-4.4.0-119-powerpc64-smp, linux-image-4.4.0-119-generic, linux-image-4.4.0-119-generic-lpae, linux-aws, linux-image-4.4.0-119-powerpc-e500mc, linux-image-4.4.0-119-lowlatency, linux-image-4.4.0-119-powerpc64-emb
• USN-3619-1: linux-kvm, linux-image-4.4.0-1020-kvm, linux-raspi2, linux-snapdragon, linux, linux-image-4.4.0-119-powerpc-smp, linux-image-extra-4.4.0-119-generic, linux-image-4.4.0-119-powerpc64-smp, linux-image-4.4.0-119-generic, linux-image-4.4.0-119-generic-lpae, linux-aws, linux-image-4.4.0-1054-aws, linux-image-4.4.0-1086-raspi2, linux-image-4.4.0-119-powerpc64-emb, linux-image-4.4.0-119-powerpc-e500mc, linux-image-4.4.0-119-lowlatency, linux-image-4.4.0-1088-snapdragon
• USN-3632-1: linux-azure, linux-image-extra-4.13.0-1014-azure, linux-image-4.13.0-1014-azure