Write Bug in Linux Kernel Affects Xilinx Versal Processors

CVE-2025-21845

What is CVE-2025-21845?

A bug in the Linux kernel related to the mtd: spi-nor subsystem can lead to issues during write operations on Xilinx Versal processors. The malfunction occurs in the 'sst_nor_write_data()' function, where only a single byte of data is written, regardless of the amount specified. This can cause system crashes and data corruption due to incomplete writes. Proper handling of write sizes is essential to maintain system stability and integrity.

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