medium5.5
CVE-2022-49749
In the Linux kernel, the following vulnerability has been resolved: i2c: designware: use casting of u64 in clock multiplication to avoid overflow In functions …
Impact
In the Linux kernel, the following vulnerability has been resolved: i2c: designware: use casting of u64 in clock multiplication to avoid overflow In functions i2c_dw_scl_lcnt() and i2c_dw_scl_hcnt() may have overflow by depending on the values of the given parameters including the ic_clk. For example in our use case where ic_clk is larger than one million, multiplication of ic_clk * 4700 will result in 32 bit overflow. Add cast of u64 to the calculation to avoid multiplication overflow, and use the corresponding define for divide.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Linux | Linux Kernel | from 3.2 before 5.10.166 from 5.11 before 5.15.91 from 5.16 before 6.1.9 Version 6.2 |
Weakness classification
References
- NVD record
- CVE.org record
- https://git.kernel.org/stable/c/2f29d780bd691d20e89e5b35d5e6568607115e94
- https://git.kernel.org/stable/c/9f36aae9e80e79b7a6d62227eaa96935166be9fe
- https://git.kernel.org/stable/c/c8c37bc514514999e62a17e95160ed9ebf75ca8d
- https://git.kernel.org/stable/c/ed173f77fd28a3e4fffc13b3f28687b9eba61157