USN-3779-1: Linux kernel vulnerabilities

02 October 2018

Several security issues were fixed in the Linux kernel.

Releases

Packages

  • linux - Linux kernel

Details

It was discovered that an integer overflow vulnerability existed in the
Linux kernel when loading an executable to run. A local attacker could use
this to gain administrative privileges. (CVE-2018-14634)

It was discovered that a stack-based buffer overflow existed in the iSCSI
target implementation of the Linux kernel. A remote attacker could use this
to cause a denial of service (system crash). (CVE-2018-14633)

Update instructions

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

Ubuntu 12.04

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.

Related notices

  • USN-3776-2: linux-image-lowlatency-lts-xenial, linux-image-4.4.0-137-powerpc64-emb, linux-image-powerpc64-emb-lts-xenial, linux-lts-xenial, linux-image-4.4.0-137-powerpc-e500mc, linux-image-4.4.0-137-powerpc64-smp, linux-image-powerpc64-smp-lts-xenial, linux-image-powerpc-smp-lts-xenial, linux-image-generic-lpae-lts-xenial, linux-image-4.4.0-137-generic-lpae, linux-image-4.4.0-137-generic, linux-image-4.4.0-1031-aws, linux-image-powerpc-e500mc-lts-xenial, linux-image-4.4.0-137-powerpc-smp, linux-image-4.4.0-137-lowlatency, linux-image-generic-lts-xenial, linux-image-aws, linux-aws
  • USN-3777-3: linux-azure, linux-image-azure, linux-image-4.15.0-1025-azure
  • USN-3777-2: linux-hwe, linux-image-generic-lpae-hwe-16.04, linux-image-gcp, linux-image-oem, linux-image-4.15.0-36-lowlatency, linux-image-4.15.0-36-generic, linux-image-gke, linux-image-4.15.0-36-generic-lpae, linux-gcp, linux-image-lowlatency-hwe-16.04, linux-image-generic-hwe-16.04, linux-image-4.15.0-1021-gcp
  • USN-3775-1: linux-image-powerpc64-emb, linux-image-3.13.0-160-lowlatency, linux-image-3.13.0-160-powerpc-e500mc, linux-image-3.13.0-160-powerpc-smp, linux, linux-image-generic-lpae, linux-image-3.13.0-160-generic-lpae, linux-image-generic, linux-image-3.13.0-160-powerpc-e500, linux-image-3.13.0-160-generic, linux-image-powerpc64-smp, linux-image-powerpc-e500mc, linux-image-3.13.0-160-powerpc64-emb, linux-image-powerpc-smp, linux-image-powerpc-e500, linux-image-lowlatency, linux-image-3.13.0-160-powerpc64-smp
  • USN-3775-2: linux-image-generic-lts-trusty, linux-image-3.13.0-160-generic-lpae, linux-lts-trusty, linux-image-3.13.0-160-generic, linux-image-generic-lpae-lts-trusty
  • USN-3777-1: linux-image-generic-lpae, linux, linux-image-kvm, linux-image-4.15.0-1021-oem, linux-image-4.15.0-36-lowlatency, linux-image-gke, linux-image-4.15.0-36-generic-lpae, linux-image-4.15.0-1023-aws, linux-aws, linux-image-4.15.0-1021-gcp, linux-image-gcp, linux-raspi2, linux-image-raspi2, linux-image-4.15.0-1023-kvm, linux-kvm, linux-image-generic, linux-image-4.15.0-36-generic, linux-image-4.15.0-36-snapdragon, linux-image-aws, linux-image-snapdragon, linux-image-4.15.0-1024-raspi2, linux-image-oem, linux-oem, linux-gcp, linux-image-lowlatency
  • USN-3776-1: linux-image-4.4.0-1098-raspi2, linux-image-4.4.0-137-powerpc64-emb, linux-image-generic-lpae, linux, linux-image-kvm, linux-image-4.4.0-137-powerpc-smp, linux-image-powerpc-smp, linux-aws, linux-image-powerpc64-emb, linux-snapdragon, linux-image-4.4.0-1069-aws, linux-raspi2, linux-image-powerpc-e500mc, linux-image-raspi2, linux-image-4.4.0-137-powerpc64-smp, linux-kvm, linux-image-generic, linux-image-4.4.0-137-generic, linux-image-4.4.0-137-generic-lpae, linux-image-powerpc64-smp, linux-image-aws, linux-image-snapdragon, linux-image-4.4.0-137-powerpc-e500mc, linux-image-4.4.0-1035-kvm, linux-image-4.4.0-1102-snapdragon, linux-image-4.4.0-137-lowlatency, linux-image-lowlatency