Raspberry Pi RP2350 A4 update fixes old bugs and dares you to break it again
ID: fe05374e-0a72-55aa-952f-23cfd706eb6c
STIX ID: report--fe05374e-0a72-55aa-952f-23cfd706eb6c
Feed Name: The Register (Security)
Raspberry Pi released the A4 stepping of the RP2350 microcontroller, addressing prior glitches identified in a hacking challenge (which required physical access), fixing a GPIO pull-up issue, and adding 5V-tolerant GPIO. The update includes support for self-decrypting binaries and hardened AES decryption with high resistance to side-channel attacks, with SDK v2.1 as the minimum for compatibility. A new hacking challenge is being launched to validate the side-channel hardening while aiming to avoid the need for another chip spin.
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