CVE-2021-47098
hwmon: (lm90) Prevent integer overflow/underflow in hysteresis calculations
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.
INFO
Published Date :
March 4, 2024, 6:15 p.m.
Last Modified :
Feb. 3, 2025, 1:49 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | [email protected] |
Solution
- Update the Linux kernel packages.
- Apply the latest available security patches.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2021-47098.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-47098 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2021-47098
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-47098 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-47098 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Feb. 03, 2025
Action Type Old Value New Value Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Added CWE NIST CWE-190 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.14 up to (excluding) 5.15.2 *cpe:2.3:o:linux:linux_kernel:5.16:rc1:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:5.16:rc2:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:5.16:rc3:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:5.16:rc4:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:5.16:rc5:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:5.16:rc6:*:*:*:*:*:* Changed Reference Type https://git.kernel.org/stable/c/55840b9eae5367b5d5b29619dc2fb7e4596dba46 No Types Assigned https://git.kernel.org/stable/c/55840b9eae5367b5d5b29619dc2fb7e4596dba46 Patch Changed Reference Type https://git.kernel.org/stable/c/55840b9eae5367b5d5b29619dc2fb7e4596dba46 No Types Assigned https://git.kernel.org/stable/c/55840b9eae5367b5d5b29619dc2fb7e4596dba46 Patch Changed Reference Type https://git.kernel.org/stable/c/d105f30bea9104c590a9e5b495cb8a49bdfe405f No Types Assigned https://git.kernel.org/stable/c/d105f30bea9104c590a9e5b495cb8a49bdfe405f Patch Changed Reference Type https://git.kernel.org/stable/c/d105f30bea9104c590a9e5b495cb8a49bdfe405f No Types Assigned https://git.kernel.org/stable/c/d105f30bea9104c590a9e5b495cb8a49bdfe405f Patch -
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://git.kernel.org/stable/c/55840b9eae5367b5d5b29619dc2fb7e4596dba46 Added Reference https://git.kernel.org/stable/c/d105f30bea9104c590a9e5b495cb8a49bdfe405f -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 28, 2024
Action Type Old Value New Value -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 14, 2024
Action Type Old Value New Value -
CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Mar. 04, 2024
Action Type Old Value New Value Added 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. Added Reference Linux https://git.kernel.org/stable/c/d105f30bea9104c590a9e5b495cb8a49bdfe405f [No types assigned] Added Reference Linux https://git.kernel.org/stable/c/55840b9eae5367b5d5b29619dc2fb7e4596dba46 [No types assigned]