5.5

CVE-2022-49749

i2c: designware: use casting of u64 in clock multiplication to avoid overflow

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 3.2 < 5.10.166
Linux ≫ Linux Kernel Version >= 5.11 < 5.15.91
Linux ≫ Linux Kernel Version >= 5.16 < 6.1.9
Linux ≫ Linux Kernel Version6.2 Updaterc1
Linux ≫ Linux Kernel Version6.2 Updaterc2
Linux ≫ Linux Kernel Version6.2 Updaterc3
Linux ≫ Linux Kernel Version6.2 Updaterc4
Linux ≫ Linux Kernel Version6.2 Updaterc5
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.18% 0.075
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 5.5 1.8 3.6
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
134c704f-9b21-4f2e-91b3-4a467353bcc0 5.5 1.8 3.6
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-190 Integer Overflow or Wraparound

The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.

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