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Sukchan Lee 42506202e8 mme: Avoid abort on malformed Address AVPs in S6a messages 
The MME terminated with abort() when processing IDR or ULA messages
containing a malformed Served-Party-IP-Address (AVP 848) or
MIP-Home-Agent-Address (AVP 334).

In mme_s6a_subscription_data_from_avp(), the return value of
fd_msg_avp_value_interpret() was checked using ogs_assert(ret == 0).
However, this function may legitimately return an error if the Address
AVP contains an invalid encoding (e.g., invalid address family or
length mismatch). Since freeDiameter treats Address AVPs as raw
OctetString during decoding, malformed values can reach this code path.

As a result, receiving such an AVP caused ogs_assert() → ogs_abort() →
abort(), terminating the entire MME process.

Fix this by replacing the assertion with proper error handling.
If fd_msg_avp_value_interpret() fails, the malformed AVP is ignored
with a warning log and processing continues.

This prevents a malformed or malicious Diameter message from crashing
the MME while preserving normal operation for valid data.

Issues: #4334
2026-03-10 22:23:06 +09:00
.github Update cifuzz 2025-02-04 21:09:20 +09:00
configs [HR] Implement handling of UE-initiated PDU Session Modification (#2194) 2025-06-30 10:07:06 +09:00
debian Release v2.7.6 2025-07-19 10:32:41 +09:00
docker docker: remove deprecated version from docker-compose.yml 2026-02-08 11:55:34 +09:00
docs Add Baicells Aurora 243 to hardware list 2026-02-01 06:54:46 +09:00
lib pfcp: add defensive resets for FAR/URR optional fields in Create handlers 2026-03-10 22:02:58 +09:00
misc Add roaming type toggle via command line (#4211) 2025-12-23 13:53:53 +09:00
src mme: Avoid abort on malformed Address AVPs in S6a messages 2026-03-10 22:23:06 +09:00
subprojects Tested on FreeBSD-14.1-STABLE (#3350) 2024-08-03 21:45:52 +09:00
tests upf: Implement UE-to-UE hairpin in the GTP-U path 2026-02-26 06:07:35 +09:00
vagrant Tested on FreeBSD-14.1-STABLE (#3350) 2024-08-03 21:45:52 +09:00
webui Update to secure secrets using env 2026-01-17 10:45:03 +09:00
.clang-tidy [MISC] Add support for static code analysis 2022-07-01 21:38:47 +09:00
.dockerignore [build] Use local sources to build applications (#1583) 2022-06-19 18:18:09 +09:00
.editorconfig editorconfig: new file (#2746) 2023-11-27 22:21:35 +09:00
.gitignore .gitignore: Add install/ dir 2023-10-10 08:03:25 +09:00
LICENSE Change LICENSE to GNU AGPL v3.0 2017-12-18 10:35:54 +09:00
meson.build Release v2.7.6 2025-07-19 10:32:41 +09:00
meson_options.txt [Fuzzing] oss-fuzz support for fuzzing (#2283) 2023-05-05 17:20:11 +09:00
README.md nrf: Fix serving PLMN counter reset on NF register 2026-02-04 20:51:29 +09:00

README.md

Open5GS logo

Getting Started

Please follow the documentation at open5gs.org!

Sponsors

If you find Open5GS useful for work, please consider supporting this Open Source project by Becoming a sponsor. To manage the funding transactions transparently, you can donate through OpenCollective.

sponsors

Community

  • Problem with Open5GS can be filed as issues in this repository.
  • Other topics related to this project are happening on the discussions.
  • Voice and text chat are available in Open5GS's Discord workspace. Use this link to get started.

Contributing

If you're contributing through a pull request to Open5GS project on GitHub, please read the Contributor License Agreement in advance.

License

Support

Technical support and customized services for Open5GS are provided by NewPlane at support@newplane.io.