CVE-2026-89599
8.4Linux · Kernel
A race condition in the Linux kernel omapfb display driver allows local attackers to trigger a mutex initialization error, potentially leading to system instability or unauthorized memory access.
Executive summary
A race condition vulnerability in the Linux kernel omapfb display driver presents a high-severity risk of system compromise due to improper mutex initialization.
Vulnerability
The vulnerability exists in the dsicm_probe function within the omapfb driver, where the display is registered before the ddata lock is initialized. This race condition allows a local, unauthenticated attacker to interact with callbacks that utilize an uninitialized mutex, leading to undefined behavior.
Business impact
The CVSS score of 8.4 reflects a high-severity risk, primarily because the flaw resides within the kernel, which is the core of the operating system. Successful exploitation could result in full system compromise, denial of service, or the execution of arbitrary code with elevated privileges, severely impacting the availability and integrity of business-critical infrastructure.
Remediation
Immediate Action: Update the Linux kernel to version 6.12.109, 6.18.50, 7.2.4, or a later stable release where this race condition has been addressed.
Proactive Monitoring: Monitor system logs for kernel panic events or unexpected driver-related crashes that may indicate exploitation attempts targeting the omapfb module.
Compensating Controls: Restrict local access to the system and ensure that hardware-level access is limited to authorized personnel to reduce the attack surface for local kernel-level exploits.
Exploitation status
Public Exploit Available: No
Analyst recommendation
This vulnerability represents a significant risk to system stability and security. Administrators should prioritize patching affected Linux distributions by applying the latest stable kernel updates provided by their vendor. Given the potential for system-wide impact, testing and deploying these patches across the environment should be performed as a matter of urgency.
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History
CVE Brief tracked this CVE 1 day before it had a CVSS score.
- Disclosed CVE record published
- Collected by CVE Brief No CVSS score yet; tracked as early warning
- CVSS score assigned 8.4 (3.1)
- Analyst report written
- Published in the daily brief high section