google · jakweg · May 5, 2026 · May 7, 2026 · May 8, 2026
diff --git a/cmd/generate-release/scripts/kfsystems-cr.yaml b/cmd/generate-release/scripts/kfsystems-cr.yaml
@@ -106,8 +106,8 @@ spec:
         #
         # Use images tagged with SHAs to improve build caching.
         spaceStacksV2:
-          - name:  cflinuxfs3
-            image: cloudfoundry/cflinuxfs3
+          - name:  cflinuxfs5
+            image: cloudfoundry/cflinuxfs5
 
         # spaceStacksV3 contains list of default stacks to be used for cloud native
         # buildpack builds. The value must be a valid JSON or YAML string.

diff --git a/config/config-defaults.yaml b/config/config-defaults.yaml
@@ -112,8 +112,8 @@ data:
     #
     # Use images tagged with SHAs to improve build caching.
     spaceStacksV2: |
-      - name:  cflinuxfs3
-        image: cloudfoundry/cflinuxfs3
+      - name:  cflinuxfs5
+        image: cloudfoundry/cflinuxfs5
 
     # spaceStacksV3 contains list of default stacks to be used for cloud native
     # buildpack builds. The value must be a valid JSON or YAML string.
@@ -225,8 +225,12 @@ data:
     - name: nginx_buildpack
       url: https://github.com/cloudfoundry/nginx-buildpack
   spaceStacksV2: |
-    - name: cflinuxfs3
-      image: cloudfoundry/cflinuxfs3@sha256:5219e9e30000e43e5da17906581127b38fa6417f297f522e332a801e737928f5
+    - name: cflinuxfs4
+      image: cloudfoundry/cflinuxfs4@sha256:118249de04f4f7543bc8118a9943c86d1c30504e687f468c4342d22b1e3d713b
+    - name: cflinuxfs5
+      image: cloudfoundry/cflinuxfs5@sha256:206c68c5753abd24beb85565e9ed525d1f1be24bdab252193793b49b44d4b69e
+    - name:  cflinuxfs3
+      image: cloudfoundry/cflinuxfs3
   spaceStacksV3: |
     - name: kf-v2-to-v3-shim
       description: A V3 stack that wraps the V2 buildpacks.
@@ -236,8 +240,16 @@ data:
       description: Google buildpacks (https://github.com/GoogleCloudPlatform/buildpacks)
       buildImage: gcr.io/buildpacks/builder:v1
       runImage: gcr.io/buildpacks/gcp/run:v1
+    - name: org.cloudfoundry.stacks.cflinuxfs4
+      description: A large Cloud Foundry stack based on Ubuntu 22.04 (Jammy Jellyfish)
+      buildImage: paketobuildpacks/builder-jammy-full@sha256:25efe93f3afa866e058f1bf6f72b5734dbd270a4b60e344a0df2d613bc19074c
+      runImage: paketobuildpacks/run-jammy-full@sha256:43f13c88b7ed100a34520e907fba396c2879605efd14012aa9a696caeff43f9d
+    - name: org.cloudfoundry.stacks.cflinuxfs5
+      description: A large Cloud Foundry stack based on Ubuntu 24.04 (Noble)
+      buildImage: paketobuildpacks/ubuntu-noble-builder@sha256:fc86fdc15593f47178073b682c75c4991f27b4a2a62d78417fdf505307bb92ae
+      runImage: paketobuildpacks/ubuntu-noble-run@sha256:013d949ebb61d4771a77f44511eb0de723d092ef4904a83ffa1fee0bdb703275
     - name: org.cloudfoundry.stacks.cflinuxfs3
-      description: A large Cloud Foundry stack based on Ubuntu 18.04
+      description: (Legacy) A large Cloud Foundry stack based on Ubuntu 18.04
       buildImage: cloudfoundry/cnb:cflinuxfs3@sha256:f96b6e3528185368dd6af1d9657527437cefdaa5fa135338462f68f9c9db3022
       runImage: cloudfoundry/run:full-cnb@sha256:dbe17be507b1cc6ffae1e9edf02806fe0e28ffbbb89a6c7ef41f37b69156c3c2
   spaceDefaultToV3Stack: "false"

diff --git a/docs/content/en/docs/v2.11/cli/generated/kf-push.md b/docs/content/en/docs/v2.11/cli/generated/kf-push.md
@@ -17,7 +17,7 @@ description: "Create a new App or apply updates to an existing one."
 kf push myapp
 kf push myapp --buildpack my.special.buildpack # Discover via kf buildpacks
 kf push myapp --env FOO=bar --env BAZ=foo
-kf push myapp --stack cloudfoundry/cflinuxfs3 # Use a cflinuxfs3 runtime
+kf push myapp --stack cloudfoundry/cflinuxfs5 # Use a cflinuxfs5 runtime
 kf push myapp --health-check-http-endpoint /myhealthcheck # Specify a healthCheck for the app
 </pre>
 

diff --git a/.../content/en/docs/v2.11/developer/build-and-deploy/buildpacks-getting-started.md b/.../content/en/docs/v2.11/developer/build-and-deploy/buildpacks-getting-started.md
@@ -31,7 +31,7 @@ kf push java-v2 --path target/helloworld-0.0.1-SNAPSHOT.jar
 Use [spring initializr](https://start.spring.io/) to create a Java 8 maven project with a spring web dependency and JAR packaging. Download it, extract it, and once extracted, push to Kf with the cloud native buildpack.
 
 ```sh
-kf push java-v3 --stack org.cloudfoundry.stacks.cflinuxfs3
+kf push java-v3 --stack org.cloudfoundry.stacks.cflinuxfs5
 ```
 
 ## Python (v2) buildpack
@@ -85,7 +85,7 @@ kf push python --buildpack python\_buildpack
 Push the Python flask app using cloud native buildpacks.
 
 ```sh
-kf push pythonv3 --stack org.cloudfoundry.stacks.cflinuxfs3
+kf push pythonv3 --stack org.cloudfoundry.stacks.cflinuxfs5
 ```
 
 ## Staticfile (v2) buildpack

diff --git a/docs/content/en/docs/v2.11/developer/build-and-deploy/v2-vs-v3-buildpacks.md b/docs/content/en/docs/v2.11/developer/build-and-deploy/v2-vs-v3-buildpacks.md
@@ -80,10 +80,10 @@ The output shows both V2 and V3 Stacks:
 ```
 Getting stacks in Space: myspace
 Version  Name                                Build Image                                                                                          Run Image
-V2       cflinuxfs3                          cloudfoundry/cflinuxfs3@sha256:5219e9e30000e43e5da17906581127b38fa6417f297f522e332a801e737928f5      cloudfoundry/cflinuxfs3@sha256:5219e9e30000e43e5da17906581127b38fa6417f297f522e332a801e737928f5
+V2       cflinuxfs5                          cloudfoundry/cflinuxfs5@sha256:206c68c5753abd24beb85565e9ed525d1f1be24bdab252193793b49b44d4b69e      cloudfoundry/cflinuxfs5@sha256:206c68c5753abd24beb85565e9ed525d1f1be24bdab252193793b49b44d4b69e
 V3       kf-v2-to-v3-shim                    gcr.io/kf-releases/v2-to-v3:v2.7.0                                                                   gcr.io/buildpacks/gcp/run:v1                                                                       This is a stack added by the integration tests to assert that v2->v3 shim works
 V3       google                              gcr.io/buildpacks/builder:v1                                                                         gcr.io/buildpacks/gcp/run:v1                                                                       Google buildpacks (https://github.com/GoogleCloudPlatform/buildpacks)
-V3       org.cloudfoundry.stacks.cflinuxfs3  cloudfoundry/cnb:cflinuxfs3@sha256:f96b6e3528185368dd6af1d9657527437cefdaa5fa135338462f68f9c9db3022  cloudfoundry/run:full-cnb@sha256:dbe17be507b1cc6ffae1e9edf02806fe0e28ffbbb89a6c7ef41f37b69156c3c2  A large Cloud Foundry stack based on Ubuntu 18.04
+V3       org.cloudfoundry.stacks.cflinuxfs5  cloudfoundry/cflinuxfs5@sha256:206c68c5753abd24beb85565e9ed525d1f1be24bdab252193793b49b44d4b69e  A large Cloud Foundry stack based on Ubuntu 24.04
 ```
 
 

diff --git a/docs/content/en/docs/v2.11/examples/spring-music/_index.md b/docs/content/en/docs/v2.11/examples/spring-music/_index.md
@@ -34,7 +34,7 @@ Music](https://github.com/cloudfoundry-samples/spring-music) reference App using
     cd spring-music
     ```
 
-1. Edit `manifest.yml`, and replace `path: build/libs/spring-music-1.0.jar` with `stack: org.cloudfoundry.stacks.cflinuxfs3`. This instructs Kf to build from source using [cloud native buildpacks](https://cloud.google.com/blog/products/containers-kubernetes/google-cloud-now-supports-buildpacks) so you don't have to compile locally.
+1. Edit `manifest.yml`, and replace `path: build/libs/spring-music-1.0.jar` with `stack: org.cloudfoundry.stacks.cflinuxfs5`. This instructs Kf to build from source using [cloud native buildpacks](https://cloud.google.com/blog/products/containers-kubernetes/google-cloud-now-supports-buildpacks) so you don't have to compile locally.
 
     ```sh
     ---

diff --git a/docs/content/en/docs/v2.11/migrating/builds.md b/docs/content/en/docs/v2.11/migrating/builds.md
@@ -23,13 +23,13 @@ Best practices for container runtimes differ from Cloud Foundry's application be
 
 In Cloud Foundry and Kf it's common to `push` in every environment which produces a separate build and image. This is a common source of errors if an application development team hasn't pinned the dependencies for their application correctly.
 
-In Cloud Foundry and Kf this pushing provides an additional purpose, a platform operations team can change buildpacks or base images in an environment to patch applications on the fly. This has always been risky, but large base images like `cflinuxfs3`, come with many security vulnerabilities.
+In Cloud Foundry and Kf this pushing provides an additional purpose, a platform operations team can change buildpacks or base images in an environment to patch applications on the fly. This has always been risky, but large base images like `cflinuxfs*`, come with many security vulnerabilities.
 
 **Things to consider:**
 
 *   Applications should be built with the dependencies they need for all environments. They shouldn't depend on the environment like the [Spring Autoreconfiguration buildpack](https://github.com/cloudfoundry/java-buildpack-auto-reconfiguration).
 *   Teams should be able to patch and promote an image quickly up through environments as the preferred method of patching.
-*   Building on smaller base images than `cflinuxfs3` may leave teams without tools they expect to use when using `ssh` to debug containers or may expose hidden dependencies.
+*   Building on smaller base images than `cflinuxfs*` may leave teams without tools they expect to use when using `ssh` to debug containers or may expose hidden dependencies.
 *   Cloud Foundry and Kf add a [launcher process](https://github.com/cloudfoundry/buildpackapplifecycle/tree/main/launcher) responsible for reading Procfiles and certain environment variables. Applications will need to stop using these, or you should create a drop-in replacement launcher.
 *   Operations teams should monitor deployed images for vulnerabilities.
 

diff --git a/docs/content/en/docs/v2.11/operator/buildpacks/configure-stacks.md b/docs/content/en/docs/v2.11/operator/buildpacks/configure-stacks.md
@@ -38,7 +38,7 @@ spec:
       - name: ruby_buildpack
         url: https://github.com/cloudfoundry/ruby-buildpack
       spaceStacksV2:
-      - name: cflinuxfs3
-        image: cloudfoundry/cflinuxfs3@sha256:5219e9e30000e43e5da17906581127b38fa6417f297f522e332a801e737928f5
+      - name: cflinuxfs5
+        image: cloudfoundry/cflinuxfs5@sha256:206c68c5753abd24beb85565e9ed525d1f1be24bdab252193793b49b44d4b69e
 
 ```
diff --git a/docs/content/en/docs/v2.11/operator/security/compute-isolation.md b/docs/content/en/docs/v2.11/operator/security/compute-isolation.md
@@ -75,10 +75,10 @@ To configure the `nodeSelector` on a stack:
    .....
    .....
    spaceStacksV2: |
-   - name:  cflinuxfs3
-           image: cloudfoundry/cflinuxfs3
+   - name:  cflinuxfs5
+           image: cloudfoundry/cflinuxfs5
            nodeSelector:
-                 OS_KERNEL: LINUX_4.4.1 
+                 OS_KERNEL: LINUX_6.12.68
    .....
    .....
    ```

diff --git a/operator/cmd/manager/kodata/kf/2.11/v2.11.5_kf.yaml b/operator/cmd/manager/kodata/kf/2.11/v2.11.5_kf.yaml
@@ -7768,8 +7768,8 @@ data:
     #
     # Use images tagged with SHAs to improve build caching.
     spaceStacksV2: |
-      - name:  cflinuxfs3
-        image: cloudfoundry/cflinuxfs3
+      - name:  cflinuxfs5
+        image: cloudfoundry/cflinuxfs5
 
     # spaceStacksV3 contains list of default stacks to be used for cloud native
     # buildpack builds. The value must be a valid JSON or YAML string.
@@ -7849,8 +7849,12 @@ data:
     - name: nginx_buildpack
       url: https://github.com/cloudfoundry/nginx-buildpack
   spaceStacksV2: |
-    - name: cflinuxfs3
-      image: cloudfoundry/cflinuxfs3@sha256:5219e9e30000e43e5da17906581127b38fa6417f297f522e332a801e737928f5
+    - name: cflinuxfs4
+      image: cloudfoundry/cflinuxfs4@sha256:118249de04f4f7543bc8118a9943c86d1c30504e687f468c4342d22b1e3d713b
+    - name: cflinuxfs5
+      image: cloudfoundry/cflinuxfs5@sha256:206c68c5753abd24beb85565e9ed525d1f1be24bdab252193793b49b44d4b69e
+    - name:  cflinuxfs3
+      image: cloudfoundry/cflinuxfs3
   spaceStacksV3: |
     - name: kf-v2-to-v3-shim
       description: A V3 stack that wraps the V2 buildpacks.
@@ -7860,8 +7864,16 @@ data:
       description: Google buildpacks (https://github.com/GoogleCloudPlatform/buildpacks)
       buildImage: gcr.io/buildpacks/builder:v1
       runImage: gcr.io/buildpacks/gcp/run:v1
+    - name: org.cloudfoundry.stacks.cflinuxfs4
+      description: A large Cloud Foundry stack based on Ubuntu 22.04 (Jammy Jellyfish)
+      buildImage: paketobuildpacks/builder-jammy-full@sha256:25efe93f3afa866e058f1bf6f72b5734dbd270a4b60e344a0df2d613bc19074c
+      runImage: paketobuildpacks/run-jammy-full@sha256:43f13c88b7ed100a34520e907fba396c2879605efd14012aa9a696caeff43f9d
+    - name: org.cloudfoundry.stacks.cflinuxfs5
+      description: A large Cloud Foundry stack based on Ubuntu 24.04 (Noble)
+      buildImage: paketobuildpacks/ubuntu-noble-builder@sha256:fc86fdc15593f47178073b682c75c4991f27b4a2a62d78417fdf505307bb92ae
+      runImage: paketobuildpacks/ubuntu-noble-run@sha256:013d949ebb61d4771a77f44511eb0de723d092ef4904a83ffa1fee0bdb703275
     - name: org.cloudfoundry.stacks.cflinuxfs3
-      description: A large Cloud Foundry stack based on Ubuntu 18.04
+      description: (Legacy) A large Cloud Foundry stack based on Ubuntu 18.04
       buildImage: cloudfoundry/cnb:cflinuxfs3@sha256:f96b6e3528185368dd6af1d9657527437cefdaa5fa135338462f68f9c9db3022
       runImage: cloudfoundry/run:full-cnb@sha256:dbe17be507b1cc6ffae1e9edf02806fe0e28ffbbb89a6c7ef41f37b69156c3c2
   spaceDefaultToV3Stack: "false"

diff --git a/pkg/apis/kf/config/store_test.go b/pkg/apis/kf/config/store_test.go
@@ -96,8 +96,8 @@ func TestStoreLoadWithContext(t *testing.T) {
 
 	testutil.AssertEqual(t, "SpaceStacksV2", StackV2List{
 		{
-			Name:  "cflinuxfs3",
-			Image: "cloudfoundry/cflinuxfs3",
+			Name:  "cflinuxfs5",
+			Image: "cloudfoundry/cflinuxfs5",
 		},
 	}, configDefaults.SpaceStacksV2)
 

diff --git a/pkg/apis/kf/config/types_test.go b/pkg/apis/kf/config/types_test.go
@@ -90,15 +90,15 @@ func TestStackV2List_Validate(t *testing.T) {
 		"happy path": {
 			Context: context.Background(),
 			Input: StackV2List{
-				{Name: "some-stack", Image: "cloudfoundry/cflinuxfs3"},
+				{Name: "some-stack", Image: "cloudfoundry/cflinuxfs5"},
 			},
 			Want: nil,
 		},
 		"duplicate name": {
 			Context: context.Background(),
 			Input: StackV2List{
-				{Name: "some-stack", Image: "cloudfoundry/cflinuxfs3"},
-				{Name: "some-stack", Image: "cloudfoundry/cflinuxfs3"},
+				{Name: "some-stack", Image: "cloudfoundry/cflinuxfs5"},
+				{Name: "some-stack", Image: "cloudfoundry/cflinuxfs5"},
 			},
 			Want: &apis.FieldError{
 				Message: "duplicate name",
@@ -124,7 +124,7 @@ func TestStackV2_Validate(t *testing.T) {
 			Context: context.Background(),
 			Input: &StackV2Definition{
 				Name:  "some-stack",
-				Image: "cloudfoundry/cflinuxfs3",
+				Image: "cloudfoundry/cflinuxfs5",
 			},
 			Want: nil,
 		},
@@ -138,7 +138,7 @@ func TestStackV2_Validate(t *testing.T) {
 		"missing name": {
 			Context: context.Background(),
 			Input: &StackV2Definition{
-				Image: "cloudfoundry/cflinuxfs3",
+				Image: "cloudfoundry/cflinuxfs5",
 			},
 			Want: apis.ErrMissingField("name"),
 		},
@@ -171,7 +171,7 @@ func TestStackV3List_Validate(t *testing.T) {
 		"recurses to children": {
 			Context: context.Background(),
 			Input: StackV3List{
-				{Name: "some-stack", RunImage: "cloudfoundry/cflinuxfs3:run"},
+				{Name: "some-stack", RunImage: "cloudfoundry/cflinuxfs5:run"},
 			},
 			Want: apis.ErrMissingField("[0].buildImage"),
 		},
@@ -186,32 +186,32 @@ func TestStackV3_Validate(t *testing.T) {
 			Context: context.Background(),
 			Input: &StackV3Definition{
 				Name:       "some-stack",
-				BuildImage: "cloudfoundry/cflinuxfs3:build",
-				RunImage:   "cloudfoundry/cflinuxfs3:run",
+				BuildImage: "cloudfoundry/cflinuxfs5:build",
+				RunImage:   "cloudfoundry/cflinuxfs5:run",
 			},
 			Want: nil,
 		},
 		"missing build image": {
 			Context: context.Background(),
 			Input: &StackV3Definition{
 				Name:     "some-stack",
-				RunImage: "cloudfoundry/cflinuxfs3:run",
+				RunImage: "cloudfoundry/cflinuxfs5:run",
 			},
 			Want: apis.ErrMissingField("buildImage"),
 		},
 		"missing run image": {
 			Context: context.Background(),
 			Input: &StackV3Definition{
 				Name:       "some-stack",
-				BuildImage: "cloudfoundry/cflinuxfs3:build",
+				BuildImage: "cloudfoundry/cflinuxfs5:build",
 			},
 			Want: apis.ErrMissingField("runImage"),
 		},
 		"missing name": {
 			Context: context.Background(),
 			Input: &StackV3Definition{
-				BuildImage: "cloudfoundry/cflinuxfs3:build",
-				RunImage:   "cloudfoundry/cflinuxfs3:run",
+				BuildImage: "cloudfoundry/cflinuxfs5:build",
+				RunImage:   "cloudfoundry/cflinuxfs5:run",
 			},
 			Want: apis.ErrMissingField("name"),
 		},
@@ -223,16 +223,16 @@ func TestStackV3_Validate(t *testing.T) {
 func ExampleStackV2List_FindStackByName() {
 	list := StackV2List{
 		{
-			Name:  "cflinuxfs3",
-			Image: "cloudfoundry/cflinuxfs3",
+			Name:  "cflinuxfs5",
+			Image: "cloudfoundry/cflinuxfs5",
 		},
 	}
 
 	fmt.Println("doesn't exist:", list.FindStackByName("does-not-exist"))
-	fmt.Println("exists image:", list.FindStackByName("cflinuxfs3").Image)
+	fmt.Println("exists image:", list.FindStackByName("cflinuxfs5").Image)
 
 	// Output: doesn't exist: <nil>
-	// exists image: cloudfoundry/cflinuxfs3
+	// exists image: cloudfoundry/cflinuxfs5
 }
 
 func ExampleBuildpackV2List_WithoutDisabled() {

diff --git a/pkg/kf/commands/apps/acceptance_test.go b/pkg/kf/commands/apps/acceptance_test.go
@@ -66,9 +66,9 @@ func setupSimpleChineseApp() acceptance.SourceCode {
 	}
 }
 
-func setupSpringMusic() acceptance.SourceCode {
+func setupSpringMusic(cflinuxfsVersion string) acceptance.SourceCode {
 	return acceptance.SourceCode{
-		Name: "spring-music",
+		Name: "spring-music-" + cflinuxfsVersion,
 		Repo: "http://github.com/cloudfoundry-samples/spring-music",
 		Setup: func(t *testing.T) {
 			man, err := manifest.NewFromFile(context.Background(), "manifest.yml", nil)
@@ -80,7 +80,7 @@ func setupSpringMusic() acceptance.SourceCode {
 			man.Applications[0].Path = ""
 			delete(man.Applications[0].Env, "JBP_CONFIG_SPRING_AUTO_RECONFIGURATION")
 			man.Applications[0].Env["BP_AUTO_RECONFIGURATION_ENABLED"] = "false"
-			man.Applications[0].Stack = "org.cloudfoundry.stacks.cflinuxfs3"
+			man.Applications[0].Stack = "org.cloudfoundry.stacks." + cflinuxfsVersion
 
 			yamlData, err := yaml.Marshal(man)
 			testutil.AssertNil(t, "yaml.Marshal", err)
@@ -104,7 +104,9 @@ func TestAcceptance_Get200(t *testing.T) {
 			setupCfPhpInfo(),
 			setupDotnetCoreHelloWorld(),
 			setupSimpleChineseApp(),
-			setupSpringMusic(),
+			setupSpringMusic("cflinuxfs3"),
+			setupSpringMusic("cflinuxfs4"),
+			setupSpringMusic("cflinuxfs5"),
 			setupTestApp(),
 		},
 		func(ctx context.Context, t *testing.T, kf *integration.Kf, appPath string) {
-Original file line number
+Diff line change
@@ Expand Up @@
         cd spring-music
         ```
-. Edit `manifest.yml`, and replace `path: build/libs/spring-music-1.0.jar` with `stack: org.cloudfoundry.stacks.cflinuxfs3`. This instructs Kf to build from source using [cloud native buildpacks](https://cloud.google.com/blog/products/containers-kubernetes/google-cloud-now-supports-buildpacks) so you don't have to compile locally.
+. Edit `manifest.yml`, and replace `path: build/libs/spring-music-1.0.jar` with `stack: org.cloudfoundry.stacks.cflinuxfs5`. This instructs Kf to build from source using [cloud native buildpacks](https://cloud.google.com/blog/products/containers-kubernetes/google-cloud-now-supports-buildpacks) so you don't have to compile locally.
         ```sh
         ---
@@ Expand Down @@