NULL Pointer Dereference Affecting github.com/free5gc/smf/internal/pfcp/handler package, versions <1.4.2
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-GOLANG-GITHUBCOMFREE5GCSMFINTERNALPFCPHANDLER-15364925
- published28 Feb 2026
- disclosed24 Feb 2026
- creditZiyu Lin
Introduced: 24 Feb 2026
CVE-2026-26024 (opens in a new tab)How to fix?
Upgrade github.com/free5gc/smf/internal/pfcp/handler to version 1.4.2 or higher.
Overview
Affected versions of this package are vulnerable to NULL Pointer Dereference via the PFCP SessionReportRequest process when ReportType.USAR is set to 1 and the UsageReport omits the mandatory URRID sub-IE. An attacker can cause the service to crash and terminate by sending a specially crafted PFCP SessionReportRequest message to the affected interface.
Workaround
This vulnerability can be mitigated by restricting access to the PFCP interface using ACLs or firewalls to only allow trusted UPF IPs, dropping or inspecting malformed PFCP SessionReportRequest messages at the network edge, and/or adding recover() around PFCP handler dispatch to prevent whole-process termination.