Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: hwmon: (lm90) Prevent integer overflow/underflow in hysteresis calculations Commit b50aa49638c7 ("hwmon: (lm90) Prevent integer underflows of temperature calculations") addressed a number of underflow situations when writing temperature limits. However, it missed one situation, seen when an attempt is made to set the hysteresis value to MAX_LONG and the critical temperature limit is negative. Use clamp_val() when setting the hysteresis temperature to ensure that the provided value can never overflow or underflow.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 5.14, < 5.15.2 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/55840b9eae5367b5d5b29619dc2fb7e4596dba46Patch
- https://git.kernel.org/stable/c/d105f30bea9104c590a9e5b495cb8a49bdfe405fPatch
- https://git.kernel.org/stable/c/55840b9eae5367b5d5b29619dc2fb7e4596dba46Patch
- https://git.kernel.org/stable/c/d105f30bea9104c590a9e5b495cb8a49bdfe405fPatch
FAQ
What is CVE-2021-47098?
CVE-2021-47098 is a vulnerability with a CVSS score of 7.8 (HIGH). In the Linux kernel, the following vulnerability has been resolved: hwmon: (lm90) Prevent integer overflow/underflow in hysteresis calculations Commit b50aa49638c7 ("hwmon: (lm90) Prevent integer un...
How severe is CVE-2021-47098?
CVE-2021-47098 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-47098?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.