2207131287 SE Firmware Update EFM32PG22, EFR32xG21 and EFR32xG22 SoCs and Modules
2022-07-15
●Description of Change:
■An upgrade to the Secure Engine firmware version v1.2.12 for EFR32xG22/xGM220/BGX220 and firmware version 1.2.13 for EFR32xG21/xGM210. The updates include:
◆Fix to address vulnerability covered in Security Advisory - A-00000393 (Calls for a minimum of Firmware v1.2.11)
◆Support for TrustZone Root Key which can be used by TrustZone secure applications for secure storage. The key is renewed on OTP configuration, debug lock and device erase.
◆Additional security and stability fixes (1.2.13 only)
●Reason for Change:
■A precisely timed fault injection attack during an SE firmware upgrade operation can potentially allow the SE firmware to be downgraded to an earlier version.
■An upgrade to the Secure Engine firmware version v1.2.12 for EFR32xG22/xGM220/BGX220 and firmware version 1.2.13 for EFR32xG21/xGM210. The updates include:
◆Fix to address vulnerability covered in Security Advisory - A-00000393 (Calls for a minimum of Firmware v1.2.11)
◆Support for TrustZone Root Key which can be used by TrustZone secure applications for secure storage. The key is renewed on OTP configuration, debug lock and device erase.
◆Additional security and stability fixes (1.2.13 only)
●Reason for Change:
■A precisely timed fault injection attack during an SE firmware upgrade operation can potentially allow the SE firmware to be downgraded to an earlier version.
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