CVE-2022-49749 (GCVE-0-2022-49749)
Vulnerability from cvelistv5
Published
2025-03-27 16:42
Modified
2025-10-01 17:23
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
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.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2f29d780bd691d20e89e5b35d5e6568607115e94Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9f36aae9e80e79b7a6d62227eaa96935166be9fePatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c8c37bc514514999e62a17e95160ed9ebf75ca8dPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ed173f77fd28a3e4fffc13b3f28687b9eba61157Patch
Impacted products
Vendor Product Version
Linux Linux Version: 2373f6b9744d5373b886f3ce1a985193cca0a356
Version: 2373f6b9744d5373b886f3ce1a985193cca0a356
Version: 2373f6b9744d5373b886f3ce1a985193cca0a356
Version: 2373f6b9744d5373b886f3ce1a985193cca0a356
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   Linux Linux Version: 3.2
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