CVE-2026-64213

A flaw was found in the Linux kernel's lm90 hardware monitoring driver. A missing lock in the alert interrupt handler allows concurrent sysfs write operations to overwrite the alert configuration, unintentionally re-enabling the hardware alert line while an alarm remains active. A local user with permission to modify sysfs attributes can trigger this race condition, resulting in an interrupt storm and a Denial of Service (DoS).

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.