CVE-2026-74546: hwmon: (adt7470) Fix divide-by-zero TOCTOU crash in fan speed read
Published Aug 15, 2026
·Updated
hwmon: (adt7470) Fix divide-by-zero TOCTOU crash in fan speed read
Affected Software
2 affected componentsFixes available
Linux Linux kernel (hwmon adt7470)
Microsoft azl3 kernel 6.6.150.1-1<6.6.152.1-1
6.6.152.1-1
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 6.6.152.1-1 - Upgrade
Upgrade
Linux kernel hwmon (adt7470)to a version that resolves this vulnerability.Patch hwmon: (adt7470) Fix divide-by-zero TOCTOU crash in fan speed read
Event History
Aug 15, 2026
CVE Published
via MITRE·12:27 PM
Data Sourced
via MITRE·12:27 PM
Description
Data Sourced
via NVD·01:17 PM
Description
Aug 23, 2026
Data Sourced
via Microsoft·10:00 PM
DescriptionSeverityWeaknessAffected Software
Frequently Asked Questions
1
What is the severity of CVE-2026-74546?
CVE-2026-74546 has a severity rating of 27.
2
How do I fix CVE-2026-74546?
To fix CVE-2026-74546, update your Linux kernel to the latest version where this vulnerability has been patched.
3
What systems are affected by CVE-2026-74546?
CVE-2026-74546 affects systems running the Linux kernel with the hwmon adt7470 driver.
4
What type of vulnerability is CVE-2026-74546?
CVE-2026-74546 is a divide-by-zero vulnerability related to fan speed data processing.
5
What impact does CVE-2026-74546 have on system stability?
CVE-2026-74546 can lead to a crash in the system when the fan data becomes zero.