Oracle Linux 7.7 ships with the following kernel packages:

kernel-3.10.0-1062.el7

Red Hat Compatible Kernel (RHCK).

kernel-uek-4.14.35-1902.3.2.el7

Unbreakable Enterprise Kernel Release 5 (UEK R5), which is the default kernel.

The Oracle Linux release is tested as a bundle, as shipped on the installation media image. When installed from the installation media image, the minimum kernel version that is supported is the kernel that is included in the image. Downgrading kernel packages is not supported, unless recommended by Oracle Support.

Note that previous releases of UEK, such as UEK R4, are not included on the installation media image but can be installed from the Oracle Linux yum server or from the Unbreakable Linux Network (ULN).

The kernel source code for the shipped kernel is available after the initial release through a public git source code repository at https://github.com/oracle/linux-uek.