=========================================================================Ubuntu Security Notice USN-5589-1
August 30, 2022

linux, linux-raspi vulnerabilities
=========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 20.04 LTS

Summary:

Several security issues were fixed in the Linux kernel.

Software Description:
- linux: Linux kernel
- linux-raspi: Linux kernel for Raspberry Pi systems

Details:

Asaf Modelevsky discovered that the Intel(R) 10GbE PCI Express (ixgbe)
Ethernet driver for the Linux kernel performed insufficient control flow
management. A local attacker could possibly use this to cause a denial 
of service. (CVE-2021-33061)

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. 
(CVE-2021-33656)

Update instructions:

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

Ubuntu 20.04 LTS:
   linux-image-5.4.0-1069-raspi    5.4.0-1069.79
   linux-image-5.4.0-125-generic   5.4.0-125.141
   linux-image-5.4.0-125-generic-lpae  5.4.0-125.141
   linux-image-5.4.0-125-lowlatency  5.4.0-125.141
   linux-image-generic             5.4.0.125.126
   linux-image-generic-lpae        5.4.0.125.126
   linux-image-lowlatency          5.4.0.125.126
   linux-image-oem                 5.4.0.125.126
   linux-image-oem-osp1            5.4.0.125.126
   linux-image-raspi               5.4.0.1069.102
   linux-image-raspi2              5.4.0.1069.102
   linux-image-virtual             5.4.0.125.126

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-5589-1
   CVE-2021-33061, CVE-2021-33656

Package Information:
   https://launchpad.net/ubuntu/+source/linux/5.4.0-125.141
   https://launchpad.net/ubuntu/+source/linux-raspi/5.4.0-1069.79

Ubuntu 5589-1: Linux kernel vulnerabilities

August 30, 2022
Several security issues were fixed in the Linux kernel.

Summary

Update Instructions

The problem can be corrected by updating your system to the following package versions: Ubuntu 20.04 LTS: linux-image-5.4.0-1069-raspi 5.4.0-1069.79 linux-image-5.4.0-125-generic 5.4.0-125.141 linux-image-5.4.0-125-generic-lpae 5.4.0-125.141 linux-image-5.4.0-125-lowlatency 5.4.0-125.141 linux-image-generic 5.4.0.125.126 linux-image-generic-lpae 5.4.0.125.126 linux-image-lowlatency 5.4.0.125.126 linux-image-oem 5.4.0.125.126 linux-image-oem-osp1 5.4.0.125.126 linux-image-raspi 5.4.0.1069.102 linux-image-raspi2 5.4.0.1069.102 linux-image-virtual 5.4.0.125.126 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-5589-1

CVE-2021-33061, CVE-2021-33656

Severity
August 30, 2022

Package Information

https://launchpad.net/ubuntu/+source/linux/5.4.0-125.141 https://launchpad.net/ubuntu/+source/linux-raspi/5.4.0-1069.79

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