CVE-2026-89504
8.4Linux · Kernel
A memory management flaw in the Linux kernel regulator driver causes a dangling pointer, potentially leading to system instability or arbitrary code execution.
Executive summary
A memory reference error in the Linux kernel regulator driver poses a high risk, as it may allow for system compromise or crashes due to dangling pointer usage.
Vulnerability
This vulnerability is a resource management error where the as3722_get_regulator_dt_data function prematurely releases an object reference. This results in a dangling pointer within the device structure, which can be exploited by a local attacker to achieve potential code execution or system denial of service.
Business impact
The flaw carries a CVSS score of 8.4, which indicates a high level of severity despite the local access requirement. Successful exploitation could allow a local attacker to escalate privileges or compromise the entire operating system, leading to unauthorized access to sensitive data and critical system downtime.
Remediation
Immediate Action: Update the Linux kernel to version 6.12.109, 6.18.50, or 7.2.4 or later, as these versions contain the necessary fix for the dangling pointer issue.
Proactive Monitoring: Monitor system logs for kernel panic events or unexpected process terminations that may indicate exploitation attempts targeting memory corruption.
Compensating Controls: Implement strict local access controls and audit logs to limit the ability of unauthorized users to interact with kernel-level interfaces.
Exploitation status
Public Exploit Available: Unknown
Analyst recommendation
Given the high CVSS score and the critical nature of kernel-level vulnerabilities, organizations should prioritize patching their Linux distributions as soon as the upstream maintainers release updated packages. Applying these updates is the only definitive way to mitigate the risk of local privilege escalation and system instability resulting from this memory management error.
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History
- Disclosed CVE record published
- Collected by CVE Brief No CVSS score yet; tracked as early warning
- Analyst report written
- Published in the daily brief high section