1. Ubuntu Security Notices
  2. USN-3779-1

USN-3779-1: Linux kernel vulnerabilities

Publication date

2 October 2018

Overview

Several security issues were fixed in the Linux kernel.

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)

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

After a standard system update you need to reboot your computer to make all the necessary changes.

Learn more about how to get the fixes.

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.

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

Ubuntu Release Package Version
12.04 precise linux-image-powerpc-smp –  3.2.0.136.151
linux-image-3.2.0-136-generic-pae –  3.2.0-136.182
linux-image-powerpc –  3.2.0.136.151
linux-image-3.2.0-136-powerpc64-smp –  3.2.0-136.182
linux-image-generic –  3.2.0.136.151
linux-image-3.2.0-136-virtual –  3.2.0-136.182
linux-image-generic-pae –  3.2.0.136.151
linux-image-highbank –  3.2.0.136.151
linux-image-3.2.0-136-generic –  3.2.0-136.182
linux-image-3.2.0-136-omap –  3.2.0-136.182
linux-image-3.2.0-136-powerpc-smp –  3.2.0-136.182
linux-image-powerpc64-smp –  3.2.0.136.151
linux-image-omap –  3.2.0.136.151
linux-image-3.2.0-136-highbank –  3.2.0-136.182

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References

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