CVE-2022-49749

The CVE-2022-49749 issue is confirmed in the Linux kernel’s I2C designware driver. In i2c_dw_scl_lcnt() and i2c_dw_scl_hcnt(), multiplying ic_clk by constant factors could overflow 32-bit arithmetic, depending on ic_clk (e.g., ic_clk > 1 MHz). The patch adds a 64-bit cast (u64) to the calculat...