CVE-2022-49749 (GCVE-0-2022-49749)

Vulnerability from cvelistv5 – Published: 2025-03-27 16:42 – Updated: 2026-05-11 19:06
VLAI?
Title
i2c: designware: use casting of u64 in clock multiplication to avoid overflow
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.
Severity ?
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-190 - Integer Overflow or Wraparound
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 2373f6b9744d5373b886f3ce1a985193cca0a356 , < ed173f77fd28a3e4fffc13b3f28687b9eba61157 (git)
Affected: 2373f6b9744d5373b886f3ce1a985193cca0a356 , < 2f29d780bd691d20e89e5b35d5e6568607115e94 (git)
Affected: 2373f6b9744d5373b886f3ce1a985193cca0a356 , < 9f36aae9e80e79b7a6d62227eaa96935166be9fe (git)
Affected: 2373f6b9744d5373b886f3ce1a985193cca0a356 , < c8c37bc514514999e62a17e95160ed9ebf75ca8d (git)
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    Linux Linux Affected: 3.2
Unaffected: 0 , < 3.2 (semver)
Unaffected: 5.10.166 , ≤ 5.10.* (semver)
Unaffected: 5.15.91 , ≤ 5.15.* (semver)
Unaffected: 6.1.9 , ≤ 6.1.* (semver)
Unaffected: 6.2 , ≤ * (original_commit_for_fix)
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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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