CVE-2023-54211

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

Description The Linux kernel contains an issue within the tracing subsystem related to the trace buffered event disable() function. A warning occurs when trace buffered event disable() is called twice while trace buffered event enable() is called only once. This is due to inconsistencies in managing the SOFT DISABLED BIT flag during event enabling and disabling. The issue can be reproduced by registering a filter, enabling an event, accessing a related process, and then unregistering the filter. The root cause is that trace buffered event enable() is called when the event is soft-mode enabled, and trace buffered event disable() is called when the event is soft-mode disabled. The provided script demonstrates the sequence of events that trigger the warning. The vulnerable function is trace buffered event disable().

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