CVE-2026-80611

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description An issue exists in the ACPI processor idle implementation where entering an ACPI Low Power Idle (LPI) state triggers an RCU splat (a kernel warning indicating RCU is not active) when function tracing or Kprobes is enabled. This occurs because the acpi idle lpi enter() function is called within the cpuidle path after RCU has been disabled for the local CPU, but the function trace call() function in ftrace expects RCU to be active before recording data.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.