GHSA-5vxx-c285-pcq4

### Impact

When using [Wireguard transparent encryption](https://docs.cilium.io/en/stable/security/network/encryption-wireguard/#encryption-wg) in a Cilium cluster, packets that originate from a terminating endpoint can leave the source node without encryption due to a race condition in how traffic is processed by Cilium.

### Patches

This issue has been patched in https://github.com/cilium/cilium/pull/38592.

This issue affects:

- Cilium v1.15 between v1.15.0 and v1.15.15 inclusive - Cilium v1.16 between v1.16.0 and v1.16.8 inclusive - Cilium v1.17 between v1.17.0 and v1.17.2 inclusive

This issue is fixed in:

- Cilium v1.15.16 - Cilium v1.16.9 - Cilium v1.17.3

### Workarounds

There is no workaround to this issue.

### Acknowledgements

The Cilium community has worked together with members of Isovalent to prepare these mitigations. Special thanks to @gandro and @pippolo84 for reporting this issue and to @julianwiedmann for the patch.

### For more information

If you think you have found a vulnerability affecting Cilium, we strongly encourage you to report it to our security mailing list at [security@cilium.io](mailto:security@cilium.io). This is a private mailing list for the Cilium security team, and your report will be treated as top priority.