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CVE-2023-26074

Status Candidate

Overview

An issue was discovered in Samsung Mobile Chipset and Baseband Modem Chipset for Exynos 850, Exynos 980, Exynos 1080, Exynos 1280, Exynos 2200, Exynos Modem 5123, Exynos Modem 5300, and Exynos Auto T5123.. A heap-based buffer overflow in the 5G MM message codec can occur due to insufficient parameter validation when decoding operator-defined access category definitions.

Related Files

Shannon Baseband NrmmMsgCodec Access Category Definitions Heap Buffer Overflow
Posted Mar 17, 2023
Authored by Ivan Fratric, Google Security Research

There is a heap buffer overflow in Shannon Baseband, inside the 5G MM protocol implementation (NrmmMsgCodec as it is called in Shannon according to debug strings), specifically when handling the Operator-defined access category definitions message (IEI = 0x76).

tags | exploit, overflow, protocol
advisories | CVE-2023-26074
SHA-256 | 0d9b32ed9b931576486f7e7630f9b8e393f008ff2bccc77a8e30f84a45f1e0f0
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