Git version used in summerwind/actions-runner-dind image is outdated and vulnerable

Checks

• I've already read https://github.com/actions/actions-runner-controller/blob/master/TROUBLESHOOTING.md and I'm sure my issue is not covered in the troubleshooting guide.
• I'm not using a custom entrypoint in my runner image

Controller Version

v0.27.0

Helm Chart Version

0.22.0

CertManager Version

No response

Deployment Method

ArgoCD

cert-manager installation

No we are not using cert-manager installation

Checks

• This isn't a question or user support case (For Q&A and community support, go to Discussions. It might also be a good idea to contract with any of contributors and maintainers if your business is so critical and therefore you need priority support
• I've read releasenotes before submitting this issue and I'm sure it's not due to any recently-introduced backward-incompatible changes
• My actions-runner-controller version (v0.x.y) does support the feature
• I've already upgraded ARC (including the CRDs, see charts/actions-runner-controller/docs/UPGRADING.md for details) to the latest and it didn't fix the issue
• I've migrated to the workflow job webhook event (if you using webhook driven scaling)

Resource Definitions

apiVersion: actions.summerwind.dev/v1alpha1
kind: RunnerDeployment
metadata:
  name: example
spec:
  replicas: 1
  template:
    metadata:
      annotations:
  spec:
      dockerdContainerResources: {}
      dockerdWithinRunnerContainer: true
      githubAPICredentialsFrom:
  
---
apiVersion: actions.summerwind.dev/v1alpha1
kind: HorizontalRunnerAutoscaler
metadata:
  name:
spec:
  maxReplicas: 2
  metrics:
    - scaleDownAdjustment: 1
      scaleDownThreshold: '0.3'
      scaleUpAdjustment: 1
      scaleUpThreshold: '0.75'
      type: PercentageRunnersBusy
  minReplicas: 1

To Reproduce

Option 1 – Using kubectl exec
Deploy the runner-controller with image summerwind/actions-runner-dind:v2.328.0-ubuntu-20.04.
Identify the runner pod:
kubectl get pods -n <namespace>
Access the pod:
kubectl exec -it <runner-pod-name> -n <namespace> -- /bin/bash
Run:
git --version
Expected output:
git version 2.38.0

Option 2 – Add a Step in Workflow
Add the following step to your GitHub Actions workflow:
- name: Check Git version
  run: git --version

Run the workflow and check the logs for:
git version 2.38.0

Describe the bug

The GitHub Actions Runner Controller uses a base image that includes an outdated version of Git.

Currently, I am using runner version v2.328.0-ubuntu-20.04, which includes Git 2.38.0. This version is affected by a known security vulnerability.

Security Advisory Reference

Git Security Advisory – GHSA-vwqx-4fm8-6qc9

Impact

Using an outdated Git version may expose the environment to known security vulnerabilities.

Recommended action: Upgrade Git to the latest version (e.g., 2.51.0 or newer) or at least a patched version.

Describe the expected behavior

The runner-controller image should include a secure and up-to-date version of Git (e.g., version 2.51.0 or newer) that is not affected by known security vulnerabilities.

When running git --version inside the runner pod, it should return a safe, patched version such as:

git version 2.51.0

Whole Controller Logs

not necessary

Whole Runner Pod Logs

√ Connected to GitHub

Current runner version: '2.328.0'
2025-09-10 06:04:29Z: Listening for Jobs

Additional Context

No response

No file or test is named in the issue. Start by locating the Dockerfile or image-build entry point for summerwind/actions-runner-dind and its Git package definition; verify the resulting runner image with git --version, and consider the work done when it reports a patched version such as 2.51.0 or newer.