CVE-2026-74546 in Linux
Summary
by MITRE • 08/15/2026
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.
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