GIC State Corruption in NVIDIA Server Platforms Due to Erratum

CVE-2023-53383

What is CVE-2023-53383?

The vulnerability in the Linux kernel affects NVIDIA T241 server platforms, where an erratum (T241-FABRIC-4) causes unexpected behavior within the Generic Interrupt Controller (GIC). This is particularly evident when handling multiple transactions from different sources, which can lead to the incorrect interleaving of data packets. When errors in the AXI4 Stream packets occur, it may result in GIC state corruption, potentially leading to system instability manifested as kernel panics or unpredictable behavior. This flaw primarily impacts systems with more than two interconnected T241 chips, which rely on multi-transfer packets within the inter-socket AXI4 Stream interface. Solutions require a workaround to redirect read accesses correctly and disable GICv4.x functionalities.

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