CVE-2026-74546

CVE-2026-74546

published August 15, 2026

CVSS
—
EPSS
0%
Percentile
6.3
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.00173 · 6.3th percentile
Published
2026-08-15T17:17Z
References (7)
https://git.kernel.org/stable/c/009240d057e26831cc925feaba4c490209c1d0ba · 416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1b46fe9dc8f8de59310f37e6c5e5c0e05ded46c3 · 416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/689a2ea75434131d0af58aeb7d51fde40e858b4d · 416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/76963b04b2d1c648d69949d8dd521e1ff7f40b51 · 416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/832069bec79cf6f903441c5769d3cdba95d0af33 · 416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/96ad57d31763559d376416cdf3bf5ae79bbbebec · 416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d328175045176f85c15c369bd21dc551351e7935 · 416baaa9-dc9f-4396-8d5f-8c081fb06d67
EPSS history
Timeline
  • 15 AUG 12:27Z
    hwmon: (adt7470) Fix divide-by-zero TOCTOU crash in fan speed read
    cvelistv5