CVE-2025-29339 Information

Description

An issue in UPF in Open5GS UPF versions up to v2.7.2 results an assertion failure vulnerability in PFCP session parameter validation. When processing a PFCP Session Establishment Request with PDN Type=0 the UPF fails to handle the invalid value propagated from SMF (or via direct attack) triggering a fatal assertion check and causing a daemon crash.

Reference

https://github.com/open5gs/open5gs/issues/3727