I am using "Ubuntu 20.04.4 LTS" and in response to a OS kernel vulnerability reported by canonical as per a security notice below I intend to upgrade the linux kernel
[ USN-5317-1: Linux kernel vulnerabilitie][1] [1]: [https://ubuntu.com/security/notices/USN-5317-1][1]
I was under the impression that upgrading kernel to the latest version should do the trick and that should be as easy as "apt dist-upgrade "
My existing kernel version as shown by uname -r is
# uname -r
5.4.0 -92-Generic
so in order to upgrade all packages including the kernel I ran
apt dist-upgrade
reboot
# after reboot
uname -r
5.4.0-104-generic
However since this isnt showing me desired kernel version I perform following specific package installs manually
enter code here
apt -y install linux-image-5.13.0-35-generic
apt -y install linux-image-5.13.0-35-generic
apt -y install linux-image-5.13.0-1017-aws
apt -y install linux-image-virtual-hwe-20.04
apt -y install linux-image-aws
apt -y install linux-image-lowlatency-hwe-20.04
apt -y install linux-image-5.14.0-1027-oem
apt -y install linux-image-5.13.0-1017-azure
apt -y install linux-image-oem-20.04c
apt -y install linux-image-oem-20.04b
apt -y install linux-image-oem-20.04d
apt -y install linux-image-generic-hwe-20.04
apt -y install linux-image-azure
apt -y install linux-image-oem-20.04
apt -y install linux-image-5.13.0-1019-gcp
apt -y install linux-image-5.13.0-35-lowlatency
apt -y install linux-image-gcp
apt -y install linux-image-5.13.0-1021-oracle
apt -y install linux-image-oracle
reboot
And then I see that the kernel is upgraded as follows to 5.13.0
uname -sr
Linux 5.13.0-35-generic
So the question are as follows
- This is a daft question; but how do I list all kernel packages
- Why does not apt dist-upgrade upgrade kernel to 5.13.0 if that is a later version ; why is it necessary to install specific packages like I did
Thanks for your help
Yogesh
