Description
Cilium is a networking, observability, and security solution with an eBPF-based dataplane. For Cilium users who use Gateway API for Ingress for some services and use LB-IPAM or BGP for LB Service implementation and use network policies to block egress traffic from workloads in a namespace to workloads in other namespaces, egress traffic from workloads covered by such network policies to LoadBalancers configured by `Gateway` resources will incorrectly be allowed. LoadBalancer resources not deployed via a Gateway API configuration are not affected by this issue. This issue affects: Cilium v1.15 between v1.15.0 and v1.15.14 inclusive, v1.16 between v1.16.0 and v1.16.7 inclusive, and v1.17 between v1.17.0 and v1.17.1 inclusive. This issue is fixed in Cilium v1.15.15, v1.16.8, and v1.17.2. A Clusterwide Cilium Network Policy can be used to work around this issue for users who are unable to upgrade.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| cilium | cilium | >= 1.16.0, < 1.16.8, >= 1.17.0, < 1.17.2, >= 1.15.0, < 1.15.15 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | govulncheck-vulndb | 0.0.20250327T184518-1.1 | openSUSE-SU-2025:14937-1 |
Wolfi
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Wolfi rolling | hubble +1 | 1.17.1-r3 | — |
| Wolfi rolling | hubble-ui +1 | 0.13.2-r3 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Go | github.com/cilium/cilium | >= 1.16.0, < 1.16.8 | 1.16.8 | GHSA-24qp-4xx8-3jvj |
| Go | github.com/cilium/cilium | >= 1.17.0, < 1.17.2 | 1.17.2 | GHSA-24qp-4xx8-3jvj |
| Go | github.com/cilium/cilium | >= 1.15.0, < 1.15.15 | 1.15.15 | GHSA-24qp-4xx8-3jvj |
| Go | github.com/cilium/cilium | >= 1.15.0, < 1.15.15 · >= 1.16.0, < 1.16.8 · >= 1.17.0, < 1.17.2 | 1.15.15, 1.16.8, 1.17.2 | GO-2025-3560 |
Advisories 1
- openSUSE-SU-2025:14937-1 govulncheck-vulndb-0.0.20250327T184518-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026