In the Linux kernel, the following vulnerability has been resolved: riscv: misaligned: Restrict user access to kernel memory raw_copy_{to,from}_user() do not call access_ok(), so this code allowed userspace to access any virtual memory address.
https://git.kernel.org/stable/c/b686ecdeacf6658e1348c1a32a08e2e72f7c0f00
https://git.kernel.org/stable/c/a3b6ff6c896aee5ef9b581e40d0045ff04fcbc8c