CVE-2022-49749

MEDIUM EPSS 7.5%
Published Mar 27, 20251y ago · Modified Jun 17, 20261w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Mar 27, 2025 1y ago
Last Modified Jun 17, 2026 1w ago

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 Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
7.5% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-190 Integer Overflow or Wraparound Numeric Error

Affected Products 8

VendorProductVersionRange
linuxlinux_kernel*≥3.2  –  <5.10.166
linuxlinux_kernel*≥5.11  –  <5.15.91
linuxlinux_kernel*≥5.16  –  <6.1.9
linuxlinux_kernel6.2any
linuxlinux_kernel6.2any
linuxlinux_kernel6.2any
linuxlinux_kernel6.2any
linuxlinux_kernel6.2any

References 4

  • git.kernel.org https://git.kernel.org/stable/c/2f29d780bd691d20e89e5b35d5e6568607115e94
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/9f36aae9e80e79b7a6d62227eaa96935166be9fe
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c8c37bc514514999e62a17e95160ed9ebf75ca8d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ed173f77fd28a3e4fffc13b3f28687b9eba61157
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/2f29d780bd691d20e89e5b35d5e6568607115e94
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/9f36aae9e80e79b7a6d62227eaa96935166be9fe
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c8c37bc514514999e62a17e95160ed9ebf75ca8d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ed173f77fd28a3e4fffc13b3f28687b9eba61157
    Patch