We have already updated Kirstone with the linux version 5.15.67.
We downloaded the kernel from:   https://cdn.kernel.org/pub/linux/kernel/v5.x/
Is this the correct place to download the 5.15.67 kernel version or do you have another location we should use?

We are using the following in our bitbake recipe (layers/meta-st/meta-st-stm32mp/recipes-kernel/linux/linux-stm32mp_5.15.bb):
SUMMARY = "Linux STM32MP Kernel"
SECTION = "kernel"
LICENSE = "GPL-2.0-only"
#LIC_FILES_CHKSUM = file://COPYING;md5=bbea815ee2795b2f4230826c0c6b8814
LIC_FILES_CHKSUM = file://COPYING;md5=6bc538ed5bd9a7fc9398086aedcd7e46
include linux-stm32mp.inc
LINUX_VERSION = "5.15"
LINUX_SUBVERSION = "67"
LINUX_TARNAME = "linux-${LINUX_VERSION}.${LINUX_SUBVERSION}"
SRC_URI = https://cdn.kernel.org/pub/linux/kernel/v5.x/${LINUX_TARNAME}.tar.xz;name=kernel
SRC_URI[kernel.sha256sum] = "da47d9a80b694548835ccb553b6eb1a1f3f5d5cddd9e2bd6f4886b99ca14f940"

When building, it fails while applying one of the patches (0005-ARM-5.15.67-stm32mp1-r1-DMA.patch) , see second.txt for the build log.
We changed the patch file name from 5.15.24 to 5.15.67.