diff --git a/meta/classes-recipe/populate_sdk_base.bbclass b/meta/classes-recipe/populate_sdk_base.bbclass
index 81896d808f..6cb43ade30 100644
--- a/meta/classes-recipe/populate_sdk_base.bbclass
+++ b/meta/classes-recipe/populate_sdk_base.bbclass
@@ -6,6 +6,10 @@
 
 PACKAGES = ""
 
+# This exists as an optimization for SPDX processing to only run in image and
+# SDK processing context.  This class happens to be common to these usages.
+SPDX_MULTILIB_SSTATE_ARCHS = "${@all_multilib_tune_values(d, 'SSTATE_ARCHS')}"
+
 inherit image-postinst-intercepts image-artifact-names
 
 # Wildcards specifying complementary packages to install for every package that has been explicitly
diff --git a/meta/classes/create-spdx-2.2.bbclass b/meta/classes/create-spdx-2.2.bbclass
index 4ea91f6499..d104668ffd 100644
--- a/meta/classes/create-spdx-2.2.bbclass
+++ b/meta/classes/create-spdx-2.2.bbclass
@@ -35,6 +35,8 @@ SPDX_LICENSES ??= "${COREBASE}/meta/files/spdx-licenses.json"
 
 SPDX_CUSTOM_ANNOTATION_VARS ??= ""
 
+SPDX_MULTILIB_SSTATE_ARCHS ??= "${SSTATE_ARCHS}"
+
 SPDX_ORG ??= "OpenEmbedded ()"
 SPDX_SUPPLIER ??= "Organization: ${SPDX_ORG}"
 SPDX_SUPPLIER[doc] = "The SPDX PackageSupplier field for SPDX packages created from \
@@ -349,7 +351,7 @@ def collect_dep_recipes(d, doc, spdx_recipe):
 
     deploy_dir_spdx = Path(d.getVar("DEPLOY_DIR_SPDX"))
     spdx_deps_file = Path(d.getVar("SPDXDEPS"))
-    package_archs = d.getVar("SSTATE_ARCHS").split()
+    package_archs = d.getVar("SPDX_MULTILIB_SSTATE_ARCHS").split()
     package_archs.reverse()
 
     dep_recipes = []
@@ -389,7 +391,7 @@ def collect_dep_recipes(d, doc, spdx_recipe):
 
     return dep_recipes
 
-collect_dep_recipes[vardepsexclude] = "SSTATE_ARCHS"
+collect_dep_recipes[vardepsexclude] = "SPDX_MULTILIB_SSTATE_ARCHS"
 
 def collect_dep_sources(d, dep_recipes):
     import oe.sbom
@@ -763,7 +765,7 @@ python do_create_runtime_spdx() {
 
     providers = collect_package_providers(d)
     pkg_arch = d.getVar("SSTATE_PKGARCH")
-    package_archs = d.getVar("SSTATE_ARCHS").split()
+    package_archs = d.getVar("SPDX_MULTILIB_SSTATE_ARCHS").split()
     package_archs.reverse()
 
     if not is_native:
@@ -869,7 +871,7 @@ python do_create_runtime_spdx() {
             oe.sbom.write_doc(d, runtime_doc, pkg_arch, "runtime", spdx_deploy, indent=get_json_indent(d))
 }
 
-do_create_runtime_spdx[vardepsexclude] += "OVERRIDES SSTATE_ARCHS"
+do_create_runtime_spdx[vardepsexclude] += "OVERRIDES SPDX_MULTILIB_SSTATE_ARCHS"
 
 addtask do_create_runtime_spdx after do_create_spdx before do_build do_rm_work
 SSTATETASKS += "do_create_runtime_spdx"
@@ -1004,7 +1006,7 @@ def combine_spdx(d, rootfs_name, rootfs_deploydir, rootfs_spdxid, packages, spdx
     import bb.compress.zstd
 
     providers = collect_package_providers(d)
-    package_archs = d.getVar("SSTATE_ARCHS").split()
+    package_archs = d.getVar("SPDX_MULTILIB_SSTATE_ARCHS").split()
     package_archs.reverse()
 
     creation_time = datetime.now(tz=timezone.utc).strftime("%Y-%m-%dT%H:%M:%SZ")
@@ -1155,4 +1157,4 @@ def combine_spdx(d, rootfs_name, rootfs_deploydir, rootfs_spdxid, packages, spdx
 
             tar.addfile(info, fileobj=index_str)
 
-combine_spdx[vardepsexclude] += "BB_NUMBER_THREADS SSTATE_ARCHS"
+combine_spdx[vardepsexclude] += "BB_NUMBER_THREADS SPDX_MULTILIB_SSTATE_ARCHS"