Description
A weakness has been identified in Free5GC 4.1.0. Affected is the function HandleRegistrationComplete of the file internal/gmm/handler.go of the component AMF. Executing a manipulation can lead to denial of service. The attack may be performed from remote. This patch is called 52e9386401ce56ea773c5aa587d4cdf7d53da799. It is best practice to apply a patch to resolve this issue.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | Free5GC | 4.1.0 | — |
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 Leap 16.0 | govulncheck-vulndb | 0.0.20260723T184607-160000.1.1 | openSUSE-SU-2026:21483-1 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Go | github.com/free5gc/amf | < 1.4.3-0.20260306074636-52e9386401ce | 1.4.3-0.20260306074636-52e9386401ce | GHSA-xq44-64rg-8g3h |
Advisories 1
- openSUSE-SU-2026:21483-1 Security update for govulncheck-vulndb SUSE / openSUSE Security Updates · Jul 31, 2026
References
- VDB-352319 | Free5GC AMF handler.go HandleRegistrationComplete denial of service vdb-entry technical-description
- VDB-352319 | CTI Indicators (IOB, IOC, TTP, IOA) signature permissions-required
- Submit #774073 | Linux Foundation free5GC 4.1.0 Denial of Service third-party-advisory
- https://github.com/free5gc/free5gc/issues/792 issue-tracking
- https://github.com/free5gc/amf/pull/198 issue-tracking patch
- https://github.com/free5gc/amf/commit/52e9386401ce56ea773c5aa587d4cdf7d53da799 patch
- https://github.com/free5gc/free5gc/ product