USN-3548-1: Linux kernel vulnerability
Ubuntu Security Notice USN-3548-1
26th January, 2018
linux vulnerability
A security issue affects these releases of Ubuntu and its
derivatives:
- Ubuntu 17.10
Summary
The system could be made to crash or run programs as an administrator.
Software description
- linux
– Linux kernel
Details
Jay Vosburgh discovered a logic error in the x86-64 syscall entry
implementation in the Linux kernel, introduced as part of the
mitigations for the Spectre vulnerability. A local attacker could use
this to cause a denial of service or possibly execute arbitrary code.
Update instructions
The problem can be corrected by updating your system to the following
package version:
- Ubuntu 17.10:
-
linux-image-4.13.0-32-lowlatency
4.13.0-32.35
-
linux-image-generic
4.13.0.32.34
-
linux-image-4.13.0-32-generic
4.13.0-32.35
-
linux-image-lowlatency
4.13.0.32.34
To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.
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
Source: USN-3548-1: Linux kernel vulnerability
