$ apt list --installed linux* ##installed linux-* after installing 20.04.1 without upgrade
Listing... Done
linux-base/focal-security,focal-security,now 4.5ubuntu3.1 all [installed,automatic]
linux-firmware/now 1.187.2 all [installed,local]
linux-generic/now 5.4.0.42.46 amd64 [installed,upgradable to: 5.4.0.62.65]
linux-headers-5.4.0-42-generic/focal-security,now 5.4.0-42.46 amd64 [installed,automatic]
linux-headers-5.4.0-42/focal-security,focal-security,now 5.4.0-42.46 all [installed,automatic]
linux-headers-generic/now 5.4.0.42.46 amd64 [installed,upgradable to: 5.4.0.62.65]
linux-image-5.4.0-42-generic/focal-security,now 5.4.0-42.46 amd64 [installed,automatic]
linux-image-generic/now 5.4.0.42.46 amd64 [installed,upgradable to: 5.4.0.62.65]
linux-libc-dev/now 5.4.0-42.46 amd64 [installed,upgradable to: 5.4.0-62.70]
linux-modules-5.4.0-42-generic/focal-security,now 5.4.0-42.46 amd64 [installed,automatic]
linux-modules-extra-5.4.0-42-generic/focal-security,now 5.4.0-42.46 amd64 [installed,automatic]
linux-modules-nvidia-440-5.4.0-42-generic/focal-security,now 5.4.0-42.46 amd64 [installed,automatic]
linux-modules-nvidia-440-generic-hwe-20.04/now 5.4.0-42.46 amd64 [installed,upgradable to: 5.8.0-38.43~20.04.1]
linux-sound-base/focal,focal,now 1.0.25+dfsg-0ubuntu5 all [installed,automatic]