CVE-2026-74546
hwmon: (adt7470) Fix divide-by-zero TOCTOU crash in fan speed read
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Aug 15, 2026 |
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Affected Versions
Linux / Linux
fc958a61ff6d34a0ec42744d3ff524ee202b2e9f < d328175045176f85c15c369bd21dc551351e7935 fc958a61ff6d34a0ec42744d3ff524ee202b2e9f < 832069bec79cf6f903441c5769d3cdba95d0af33 fc958a61ff6d34a0ec42744d3ff524ee202b2e9f < 96ad57d31763559d376416cdf3bf5ae79bbbebec fc958a61ff6d34a0ec42744d3ff524ee202b2e9f < 76963b04b2d1c648d69949d8dd521e1ff7f40b51 fc958a61ff6d34a0ec42744d3ff524ee202b2e9f < 1b46fe9dc8f8de59310f37e6c5e5c0e05ded46c3
Linux / Linux
5.15
References
git.kernel.org: https://git.kernel.org/stable/c/d328175045176f85c15c369bd21dc551351e7935 git.kernel.org: https://git.kernel.org/stable/c/832069bec79cf6f903441c5769d3cdba95d0af33 git.kernel.org: https://git.kernel.org/stable/c/96ad57d31763559d376416cdf3bf5ae79bbbebec git.kernel.org: https://git.kernel.org/stable/c/76963b04b2d1c648d69949d8dd521e1ff7f40b51 git.kernel.org: https://git.kernel.org/stable/c/1b46fe9dc8f8de59310f37e6c5e5c0e05ded46c3