Open5GS AMF nudm-handler.c amf_nudm_sdm_handle_provisioned denial of service

[nixpkgs-security-tracker]

• CVE-2026-7585
• Nixpkgs security tracker issue
• affected package maintainers: cc @Bot-wxt1221, @xddxdd

Description

A vulnerability was determined in Open5GS up to 2.7.7. The impacted element is the function amf_nudm_sdm_handle_provisioned of the file /src/amf/nudm-handler.c of the component AMF. Executing a manipulation can lead to denial of service. The attack can be launched remotely. The exploit has been publicly disclosed and may be utilized. The project was informed of the problem early through an issue report but has not responded yet.

References

• [Bug]: AMF crash on UE-driven nudm-sdm am-data response with oversized defaultSingleNssais open5gs/open5gs#4403 (exploit, issue-tracking)

4.3 MEDIUM | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R

• CVSS version: 3.1
• Attack Vector (AV): Network (N)
• Attack Complexity (AC): Low (L)
• Privileges Required (PR): Low (L)
• User Interaction (UI): None (N)
• Scope (S): Unchanged (U)
• Confidentiality (C): None (N)
• Integrity (I): None (N)
• Availability (A): Low (L)
• Exploit Code Maturity (E): Proof-of-Concept (P)
• Remediation Level (RL): Not Defined (X)
• Report Confidence (RC): Reasonable (R)

Affected packages

• open5gs (2.7.7@nixos-25.11, 2.7.7@nixos-unstable)