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Shannon Baseband NrSmPcoCodec Intra-Object Overflow

Shannon Baseband NrSmPcoCodec Intra-Object Overflow
Posted Mar 20, 2023
Authored by Ivan Fratric, Google Security Research

There is an intra-object overflow in Shannon Baseband, inside the 5G SM protocol implementation (NrSmMsgCodec as it is called in Shannon according to debug strings), when decoding the Extended protocol configuration options message (IEI = 0x7B).

tags | exploit, overflow, protocol
advisories | CVE-2023-26076
SHA-256 | fbcb90e472d2e3ece0a5999daefccbac91cb16b93b5bdde7163bb7f5b46c8021
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