diff --git a/.checkpackageignore b/.checkpackageignore
index 100dcd3da4..db6e8b883a 100644
--- a/.checkpackageignore
+++ b/.checkpackageignore
@@ -105,7 +105,6 @@ configs/imx6ulpico_defconfig lib_defconfig.ForceCheckHash
 configs/imx7dpico_defconfig lib_defconfig.ForceCheckHash
 configs/imx8mqevk_defconfig lib_defconfig.ForceCheckHash
 configs/kontron_bl_imx8mm_defconfig lib_defconfig.ForceCheckHash
-configs/kontron_smarc_sal28_defconfig lib_defconfig.ForceCheckHash
 configs/mender_x86_64_efi_defconfig lib_defconfig.ForceCheckHash
 configs/microchip_sam9x60ek_mmc_defconfig lib_defconfig.ForceCheckHash
 configs/microchip_sam9x60ek_mmc_dev_defconfig lib_defconfig.ForceCheckHash
diff --git a/board/kontron/smarc-sal28/patches/linux/linux.hash b/board/kontron/smarc-sal28/patches/linux/linux.hash
new file mode 100644
index 0000000000..a4cc7bd3f6
--- /dev/null
+++ b/board/kontron/smarc-sal28/patches/linux/linux.hash
@@ -0,0 +1,2 @@
+# From https://cdn.kernel.org/pub/linux/kernel/v6.x/sha256sums.asc
+sha256  9106a4605da9e31ff17659d958782b815f9591ab308d03b0ee21aad6c7dced4b  linux-6.18.tar.xz
diff --git a/board/kontron/smarc-sal28/patches/uboot/uboot.hash b/board/kontron/smarc-sal28/patches/uboot/uboot.hash
new file mode 100644
index 0000000000..36322a6a90
--- /dev/null
+++ b/board/kontron/smarc-sal28/patches/uboot/uboot.hash
@@ -0,0 +1,2 @@
+# Locally calculated
+sha256  ac7c04b8b7004923b00a4e5d6699c5df4d21233bac9fda690d8cfbc209fff2fd  u-boot-2026.04.tar.bz2
diff --git a/configs/kontron_smarc_sal28_defconfig b/configs/kontron_smarc_sal28_defconfig
index 09d3142589..b1e175b7b2 100644
--- a/configs/kontron_smarc_sal28_defconfig
+++ b/configs/kontron_smarc_sal28_defconfig
@@ -1,9 +1,10 @@
 BR2_aarch64=y
 BR2_cortex_a72=y
-BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_6_18=y
 BR2_TOOLCHAIN_EXTERNAL=y
 BR2_TOOLCHAIN_EXTERNAL_BOOTLIN=y
 BR2_TOOLCHAIN_EXTERNAL_BOOTLIN_AARCH64_GLIBC_STABLE=y
+BR2_GLOBAL_PATCH_DIR="board/kontron/smarc-sal28/patches"
+BR2_DOWNLOAD_FORCE_CHECK_HASHES=y
 BR2_ROOTFS_DEVICE_CREATION_DYNAMIC_EUDEV=y
 BR2_ROOTFS_OVERLAY="board/kontron/smarc-sal28/rootfs_overlay"
 BR2_ROOTFS_POST_BUILD_SCRIPT="board/kontron/smarc-sal28/post-build.sh"