Vulnerability-Lookup

GHSA-QCMX-P4H8-4FHQ

Vulnerability from github – Published: 2024-03-04 18:30 – Updated: 2025-02-03 15:31

Details

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.

Severity

7.8 (High)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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  "aliases": [
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  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nhwmon: (lm90) Prevent integer overflow/underflow in hysteresis calculations\n\nCommit b50aa49638c7 (\"hwmon: (lm90) Prevent integer underflows of\ntemperature calculations\") addressed a number of underflow situations\nwhen writing temperature limits. However, it missed one situation, seen\nwhen an attempt is made to set the hysteresis value to MAX_LONG and the\ncritical temperature limit is negative.\n\nUse clamp_val() when setting the hysteresis temperature to ensure that\nthe provided value can never overflow or underflow.",
  "id": "GHSA-qcmx-p4h8-4fhq",
  "modified": "2025-02-03T15:31:59Z",
  "published": "2024-03-04T18:30:39Z",
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}

CVE-2021-47098 (GCVE-0-2021-47098)

Vulnerability from cvelistv5 – Published: 2024-03-04 18:10 – Updated: 2026-05-11 13:48

Title

hwmon: (lm90) Prevent integer overflow/underflow in hysteresis calculations

Summary

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.

Severity

No CVSS data available.

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

Assigner

Linux

References

2 references

URL	Tags
https://git.kernel.org/stable/c/d105f30bea9104c59…
https://git.kernel.org/stable/c/55840b9eae5367b5d…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: b50aa49638c7e12abf4ecc483f4e928c5cccc1b0 , < d105f30bea9104c590a9e5b495cb8a49bdfe405f (git) Affected: b50aa49638c7e12abf4ecc483f4e928c5cccc1b0 , < 55840b9eae5367b5d5b29619dc2fb7e4596dba46 (git)
Linux	Linux	Affected: 5.14 Unaffected: 0 , < 5.14 (semver) Unaffected: 5.15.12 , ≤ 5.15.* (semver) Unaffected: 5.16 , ≤ * (original_commit_for_fix)

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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-QCMX-P4H8-4FHQ

CVE-2021-47098 (GCVE-0-2021-47098)

Tags

Sightings

Nomenclature