afu_mmio_region_get_by_offset in drivers/fpga/dfl-afu-region.c in the Linux kernel through 6.1.12 has an integer overflow.
https://security.netapp.com/advisory/ntap-20230406-0002/
https://patchwork.kernel.org/project/linux-fpga/patch/20230206054326.89323-1-k1rh4.lee%40gmail.com