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Zynq™ UltraScale+™ SoC Overwriting Protected Memory Regions Through PMU Firmware, July 01, 2025 (2025-07-01)
(AMD-SB-8008)

Summary:

In Zynq™ UltraScale+™ devices, the Platform Management Unit (PMU) Firmware is designed to implement runtime (post boot) software services that allow a remote processor to command the PMU to execute cryptographic operations (i.e. AES-GCM/256, SHA3-284, RSA) using the hardened crypto accelerators, programmable logic readback, and eFUSE read and write operations within the Configuration Security Unit (CSU).

The researcher’s paper describes a vulnerability that exists with commanding these runtime services, in that the memory pointers passed with the command are not checked to verify that the requesting processor has access to the memory space.

Affected Platforms and BIOS version numbers that contain the fix:

Product BIOS Version with Fix
AMD SP5 Genoa/Turin
S8050N
FT65TB8050N
GC68AB8056N
GC68CB8056N
GC68CB8056 (TU)N
TS70AB8056N
TS70AB8056 (TU)N
TD76B8058N
TS70B8056N
TS70B8056 (TU)N
TN85B8261N
AMD SP6 Siena
S8040N
GC73AB8046N
AMD AM5 Raphael
S8016N
GX40B8016N
HG68B8016N
AMD Rome/Milan
S8030N
FT65TB8030N
S8036N
GC68AB8036N
TS65AB8036N
TS65B8036N
TN83B8251N
TS75AB8252N




 

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