Vulnerability Description
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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 3.2, < 5.10.166 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/2f29d780bd691d20e89e5b35d5e6568607115e94Patch
- https://git.kernel.org/stable/c/9f36aae9e80e79b7a6d62227eaa96935166be9fePatch
- https://git.kernel.org/stable/c/c8c37bc514514999e62a17e95160ed9ebf75ca8dPatch
- https://git.kernel.org/stable/c/ed173f77fd28a3e4fffc13b3f28687b9eba61157Patch
FAQ
What is CVE-2022-49749?
CVE-2022-49749 is a vulnerability with a CVSS score of 5.5 (MEDIUM). 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()...
How severe is CVE-2022-49749?
CVE-2022-49749 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2022-49749?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.