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.
Metrics
Affected Vendors & Products
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Advisories
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Fixes
Solution
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Workaround
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References
History
Mon, 02 Nov 2026 19:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Weaknesses | CWE-121 | |
| Metrics |
cvssV3_1
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Mon, 02 Nov 2026 18:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | 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 |
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MITRE
Status: PUBLISHED
Assigner: mitre
Published:
Updated: 2026-11-02T19:05:07.660Z
Reserved: 2026-10-07T00:00:00.000Z
Link: CVE-2026-106808
Vulnrichment
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NVD
Status : Deferred
Published: 2026-11-02T18:18:34.120
Modified: 2026-11-02T19:35:33.347
Link: CVE-2026-106808
Redhat
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OpenCVE Enrichment
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Weaknesses