CVE-2026-74546

None

Open

TLP:CLEAR

hwmon: (adt7470) Fix divide-by-zero TOCTOU crash in fan speed read

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Description

In the Linux kernel, the following vulnerability has been resolved: hwmon: (adt7470) Fix divide-by-zero TOCTOU crash in fan speed read If the fan data becomes 0 between the FAN_DATA_VALID() check and the FAN_PERIOD_TO_RPM() conversion, it will result in a divide-by-zero crash due to a race with a concurrent update of the cached fan value. Fix a TOCTOU issue by reading fan data once.

Details

Confidence: 90%
Published: Aug 15, 2026
Last Modified: Aug 15, 2026

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