Description
free5GC SMF provides Session Management Function for free5GC, an open-source project for 5th generation (5G) mobile core networks. In versions up to and including 1.4.1, SMF panics and terminates when processing a malformed PFCP SessionReportRequest on the PFCP (UDP/8805) interface. No known upstream fix is available, but some workarounds are available. ACL/firewall the PFCP interface so only trusted UPF IPs can reach SMF (reduce spoofing/abuse surface); drop/inspect malformed PFCP SessionReportRequest messages at the network edge where feasible, and/or add recover() around PFCP handler dispatch to avoid whole-process termination (mitigation only).
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| free5gc | smf | <= 1.4.1 |
References
- https://github.com/free5gc/free5gc/issues/807Exploit, Issue Tracking
- https://github.com/free5gc/free5gc/security/advisories/GHSA-mrv4-m9wc-c4g9Vendor Advisory
Timeline
- Published
- Feb 24, 2026
- Last modified
- Jun 17, 2026
- NVD status
- Analyzed