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USN-3779-1: Linux kernel vulnerabilities

2 October 2018

Several security issues were fixed in the Linux kernel.

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Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

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Releases

Packages

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)

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

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