CVE-2026-74471
7.8Linux · Kernel
A vulnerability in the Linux kernel tracing subsystem occurs when the return value of __register_event is ignored, leading to potential system instability.
Executive summary
A high severity flaw in the Linux kernel tracing subsystem allows for potential system compromise due to improper error handling during event registration.
Vulnerability
The tracing subsystem fails to validate the return value of the __register_event function, which can lead to unexpected behavior. The attacker must have low privileges to interact with this function.
Business impact
Exploitation of this vulnerability may lead to unauthorized system access or denial of service by triggering faulty kernel operations. The CVSS score of 7.8 reflects the high potential for impact on system integrity and availability.
Remediation
Immediate Action: Apply the vendor-provided kernel updates to version 6.6.151, 6.12.103, 6.18.44, 7.1.8, or higher.
Proactive Monitoring: Review kernel logs for errors related to the tracing subsystem or module loading operations.
Compensating Controls: Limit access to system tracing and auditing features to administrative users to reduce the attack surface.
Exploitation status
Public Exploit Available: Unknown
Analyst recommendation
Kernel vulnerabilities of this nature present a clear risk to local system security. It is recommended that security teams verify their current kernel versions and apply the necessary patches to ensure the tracing subsystem is protected against this issue.