CVE-2025-39680 i2c: rtl9300: Fix out-of-bounds bug in rtl9300_i2c_smbus_xfer

In the Linux kernel, the following vulnerability has been resolved: i2c: rtl9300: Fix out-of-bounds bug in rtl9300i2csmbusxfer The data-block0 variable comes from user. Without proper check, the variable may be very large to cause an out-of-bounds bug. Fix this bug by checking the value of...