Published on May 5th, 2023 📆 | 2697 Views ⚑0
Ubuntu Security Notice USN-6058-1 – Torchsec
Ubuntu Security Notice USN-6058-1
May 05, 2023
linux-aws, linux-aws-hwe vulnerability
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 18.04 LTS
- Ubuntu 16.04 ESM
The system could be made to run programs as an administrator.
- linux-aws: Linux kernel for Amazon Web Services (AWS) systems
- linux-aws-hwe: Linux kernel for Amazon Web Services (AWS-HWE) systems
It was discovered that the Traffic-Control Index (TCINDEX) implementation
in the Linux kernel did not properly perform filter deactivation in some
situations. A local attacker could possibly use this to gain elevated
privileges. Please note that with the fix for this CVE, kernel support for
the TCINDEX classifier has been removed.
The problem can be corrected by updating your system to the following
Ubuntu 18.04 LTS:
Ubuntu 16.04 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.