HIGH 7.5 NVD
CVE-2026-106808
OpenAirInterface Core Network v2.2.1 has a stack-based buffer overflow vulnerability in the OAI CN5G UDM Nudm_UEAU Generate Authentication Data endpoint. The UD
OpenAirInterface Core Network v2.2.1 has a stack-based buffer overflow vulnerability in the OAI CN5G UDM Nudm_UEAU Generate Authentication Data endpoint. The UDM passes attacker-controlled resynchronizationInfo.rand and auts values to conv::hex_str_to_uint8(), which converts arbitrary-length hex strings into fixed-size stack buffers without validating the destination size. An unauthenticated attacker with access to the SBI interface and a valid SUPI can submit an oversized value to overwrite adjacent stack memory, corrupt the stack canary, and terminate the UDM process.
References
- https://gist.github.com/hackeryounow/66b7612729af8e205089097e68a42116
- https://github.com/openairinterface/oai-cn5g-udm/issues/4
- https://github.com/openairinterface/oai-cn5g-udm/issues/4
This high severity vulnerability with a CVSS score of 7.5 was published on 2026-11-02 via NVD.
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