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AUSCERT External Security Bulletin Redistribution
Linux kernel vulnerabilities
3 October 2018
AusCERT Security Bulletin Summary
Operating System: Ubuntu
Impact/Access: Root Compromise -- Existing Account
Denial of Service -- Existing Account
CVE Names: CVE-2018-14634 CVE-2018-14633
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Ubuntu Security Notice USN-3779-1
October 02, 2018
A security issue affects these releases of Ubuntu and its derivatives:
- - Ubuntu 12.04 ESM
Several security issues were fixed in the Linux kernel.
- - linux: Linux kernel
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)
The problem can be corrected by updating your system to the following
Ubuntu 12.04 ESM:
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.
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