Description of problem:

After upgrading 3 weeks ago from Fedora 27 to 28 using the dnf upgrade recommended method, the kernel does not update, it keeps in the last working kernel in Fedora 27. All packages are upgraded correctly to fc28 except kernel*.

Version-Release number of selected component (if applicable):

4.17.12-200.fc28 (the one available today in updates repository)
Failed in the same way in the 4-5 previous available kernels with exactly the same messages.

How reproducible:

Always when I run "dnf update"

Steps to Reproduce:

1. run "dnf update"
2. all packages get its update except the kernel
3. if update is selected (yes to update process) all the packets with new versions are updated, except the skipped package (kernel)

Actual results:

Skipping packages with broken dependencies:
 kernel            x86_64            4.17.12-200.fc28               updates             97 k

Expected results:
Kernel to be updated as usual to the new one (currently 4.17.12-200.fc28)

Additional info:

Transcription:
$> sudo dnf update
Última comprobación de caducidad de metadatos hecha hace 2:00:28, el mié 15 ago 2018 18:39:33 CEST.
Dependencias resueltas.

 Problema 1: cannot install the best update candidate for package kernel-4.16.7-200.fc27.x86_64
  - nothing provides kernel-modules-uname-r = 4.17.12-200.fc28.x86_64 needed by kernel-4.17.12-200.fc28.x86_64
 Problema 2: cannot install the best update candidate for package kernel-4.16.3-200.fc27.x86_64
  - nothing provides kernel-modules-uname-r = 4.17.12-200.fc28.x86_64 needed by kernel-4.17.12-200.fc28.x86_64
 Problema 3: cannot install the best update candidate for package kernel-4.15.13-300.fc27.x86_64
  - nothing provides kernel-modules-uname-r = 4.17.12-200.fc28.x86_64 needed by kernel-4.17.12-200.fc28.x86_64
=============================================================================================
 Paquete           Arquitectura      Versión                        Repositorio        Tamaño
=============================================================================================
Skipping packages with broken dependencies:
 kernel            x86_64            4.17.12-200.fc28               updates             97 k

Resumen de la transacción
=============================================================================================
Descartar  1 Paquete

Nada por hacer.
¡Listo!

(spanish version: Discarding 1 packet, nothing to do, done!)