CVE-2026-43227

A flaw was found in the Linux kernel's clocksource/drivers/sh_tmu component. This issue arises when the sh_tmu driver attempts to manage its power and clock states using specific runtime power management functions while holding raw spinlocks. This creates a conflict with other platform drivers that use regular spinlocks for power and clock control, particularly in real-time (PREEMPT_RT) kernel configurations. This concurrency issue can lead to an 'Invalid wait context' error, potentially causing system instability or a denial of service.

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.