Ubuntu 5591-4: Linux kernel (AWS) vulnerability | LinuxSecurity.com
==========================================================================
Ubuntu Security Notice USN-5591-4
September 02, 2022

linux-aws vulnerability
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 18.04 LTS

Summary:

The system could be made to crash or run programs as an administrator.

Software Description:
- linux-aws: Linux kernel for Amazon Web Services (AWS) systems

Details:

It was discovered that the virtual terminal driver in the Linux kernel 
did not properly handle VGA console font changes, leading to an 
out-of-bounds write. A local attacker could use this to cause a denial 
of service (system crash) or possibly execute arbitrary code.

Update instructions:

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

Ubuntu 18.04 LTS:
   linux-image-4.15.0-1140-aws     4.15.0-1140.151
   linux-image-aws-lts-18.04       4.15.0.1140.140

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:
   https://ubuntu.com/security/notices/USN-5591-4
   https://ubuntu.com/security/notices/USN-5591-1
   CVE-2021-33656

Package Information:
   https://launchpad.net/ubuntu/+source/linux-aws/4.15.0-1140.151

Ubuntu 5591-4: Linux kernel (AWS) vulnerability

September 2, 2022

Summary

A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 18.04 LTS Summary: The system could be made to crash or run programs as an administrator. Software Description: - linux-aws: Linux kernel for Amazon Web Services (AWS) systems Details: It was discovered that the virtual terminal driver in the Linux kernel did not properly handle VGA console font changes, leading to an out-of-bounds write. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code.

Update Instructions

The problem can be corrected by updating your system to the following package versions: Ubuntu 18.04 LTS: linux-image-4.15.0-1140-aws 4.15.0-1140.151 linux-image-aws-lts-18.04 4.15.0.1140.140 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

https://ubuntu.com/security/notices/USN-5591-4

https://ubuntu.com/security/notices/USN-5591-1

CVE-2021-33656

Severity
Ubuntu Security Notice USN-5591-4

Package Information

https://launchpad.net/ubuntu/+source/linux-aws/4.15.0-1140.151

We use cookies to provide and improve our services. By using our site, you consent to our Cookie Policy.