An incorrect memory offset calculation in the Linux kernel arm_ffa firmware driver could lead to local privilege escalation or system instability.

The vulnerability exists in the arm_ffa firmware driver due to an improper calculation of the Endpoint Memory Access Descriptor offset. A local authenticated attacker can leverage this flaw to trigger memory corruption, potentially leading to elevated privileges or a kernel panic.

The vulnerability carries a CVSS score of 7.8, reflecting its potential for complete compromise of system confidentiality, integrity, and availability. While the attack requires local access, successful exploitation allows an attacker to bypass security boundaries, potentially resulting in unauthorized data access or total system disruption. This poses a significant risk to the stability and security of any infrastructure relying on affected kernel versions.

Immediate Action: Update the Linux kernel to version 6.18.42, 7.1.6, or a later stable release where this fix is integrated.

Proactive Monitoring: Monitor system logs for kernel-related errors or crashes that may indicate an exploitation attempt, particularly involving the arm_ffa driver.

Compensating Controls: Restrict local system access to authorized personnel only to minimize the opportunity for an attacker to execute the code required to trigger this vulnerability.

Public Exploit Available: No

Given the potential for high-impact local exploitation, organizations should prioritize patching their Linux kernel environments. System administrators should verify their current kernel version and apply the recommended updates as part of standard maintenance cycles to ensure long-term system integrity and security.