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CVE-2022-49749— i2c: designware: use casting of u64 in clock multiplication to avoid overflow

EPSS 0.01% · P3

Affected Version Matrix 10

VendorProductVersion RangeStatus
LinuxLinux2373f6b9744d5373b886f3ce1a985193cca0a356< ed173f77fd28a3e4fffc13b3f28687b9eba61157affected
2373f6b9744d5373b886f3ce1a985193cca0a356< 2f29d780bd691d20e89e5b35d5e6568607115e94affected
2373f6b9744d5373b886f3ce1a985193cca0a356< 9f36aae9e80e79b7a6d62227eaa96935166be9feaffected
2373f6b9744d5373b886f3ce1a985193cca0a356< c8c37bc514514999e62a17e95160ed9ebf75ca8daffected
3.2affected
< 3.2unaffected
5.10.166≤ 5.10.*unaffected
5.15.91≤ 5.15.*unaffected
… +2 more rows
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I. Basic Information for CVE-2022-49749

Vulnerability Information
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Vulnerability Title
i2c: designware: use casting of u64 in clock multiplication to avoid overflow
Source: NVD (National Vulnerability Database)
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.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于时钟乘法可能导致溢出。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
LinuxLinux 2373f6b9744d5373b886f3ce1a985193cca0a356 ~ ed173f77fd28a3e4fffc13b3f28687b9eba61157 -
LinuxLinux 3.2 -

II. Public POCs for CVE-2022-49749

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III. Intelligence Information for CVE-2022-49749

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Showing top 20 of 124 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2022-49749

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