Linux Kernel Vulnerability in DBSC5 DRAM Controller by Renesas

CVE-2026-80874

What is CVE-2026-80874?

The vulnerability in the Linux kernel affects the DBSC5 DRAM controller used by Renesas, resulting from improper handling of inline ECC (Error-Correcting Code) carveouts. When DRAM utilization is high, the operating system may inadvertently access or modify areas of memory reserved for inline ECC, leading to potential system instability. To mitigate this risk, it is crucial to define these inline ECC carveout areas accurately within the system to prevent memory corruption and ensure system reliability.

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