CVE-2025-40222

CVE-2025-40222 concerns a Linux kernel vulnerability in the tty/serial sh-sci driver (RSCI) where the overrun_reg (CSR 0x48) was treated as a memory offset, causing sci_getreg() to index outside the regs array and access memory in rsci_port_params leading to WARNs. The fix modifies register handl...

CVE-2025-40222 tty: serial: sh-sci: fix RSCI FIFO overrun handling

In the Linux kernel, the following vulnerability has been resolved: tty: serial: sh-sci: fix RSCI FIFO overrun handling The receive error handling code is shared between RSCI and all other SCIF port types, but the RSCI overrunreg is specified as a memory offset, while for other SCIF types it is a...