Amazon Linux 2023: CVE-2025-37900: Important priority package update for kernel6.12

In the Linux kernel, the following vulnerability has been resolved:
iommu: Fix two issues in iommu_copy_struct_from_user()
In the review for iommu_copy_struct_to_user() helper, Matt pointed out that
a NULL pointer should be rejected prior to dereferencing it:
https://lore.kernel.org/all/[email protected]
And Alok pointed out a typo at the same time:
https://lore.kernel.org/all/[email protected]
Since both issues were copied from iommu_copy_struct_from_user(), fix them
first in the current header.