--- Comment #16 from Jimmie Mayfield email@example.com --- (In reply to Michal Suchanek from comment #14)
That's not a kernel built on leap so it's not installable. That's a known problem.
You should be able to install a kernel built on Leap from the repo mentioned above.
This discussion thread seems to boil down to the following question: which repo should Leap users point to if they want to track various upstream kernels?
Kernel:/stable:/Backport/standard tracks stable for 15.2 users
Kernel:HEAD:Backport appears to track mainline for 15.3 users
Is there a corresponding repo that tracks stable for 15.3 users?
(I guess things were simpler in the past before the kernel began to depend on glibc 2.33...)