CVE-2026-14986 Out-of-bounds write in it51xxx I2C target FIFO ISR on oversized write transaction

The ITE it51xxx I2C driver, when operating as an I2C target slave in buffer mode CONFIGI2CTARGET + CONFIGI2CTARGETBUFFERMODE, copies host-supplied write data into the fixed-size data-targetinbuffer inside its target FIFO interrupt handler targeti2cisrfifo in drivers/i2c/i2citeit51xxx.c. The copy...