CVE-2026-0107 in Android
Summary
by MITRE • 03/10/2026
In gmc_ddr_handle_mba_mr_req of gmc_mba_ddr.c, there is a possible escalation of privileges due to a confused deputy. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.
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Analysis
by VulDB Data Team • 03/16/2026
The vulnerability identified as CVE-2026-0107 represents a critical privilege escalation flaw within the graphics memory controller driver component, specifically within the gmc_ddr_handle_mba_mr_req function located in gmc_mba_ddr.c. This issue stems from a confused deputy problem that allows an attacker to manipulate the system's memory management unit in ways that bypass normal access controls. The vulnerability exists at the kernel level within graphics memory management subsystem, where proper authorization checks fail to validate the legitimacy of memory access requests. The confused deputy scenario occurs when a trusted system component incorrectly interprets or forwards requests from an untrusted source, effectively allowing malicious actors to escalate their privileges without requiring additional execution capabilities or user interaction.
The technical implementation of this vulnerability involves improper validation of memory management requests within the graphics memory controller's memory region handling mechanism. When the gmc_ddr_handle_mba_mr_req function processes memory access requests, it fails to adequately verify the authenticity of the requesting entity or the legitimacy of the memory operations being requested. This flaw allows an attacker to construct malicious memory management requests that appear to originate from legitimate system components while actually being generated by an unprivileged user. The vulnerability operates at the kernel level where memory management unit operations are handled, making it particularly dangerous as it can bypass standard user-space security mechanisms and directly manipulate system memory resources.
The operational impact of this privilege escalation vulnerability is severe as it enables local attackers to gain elevated system privileges without requiring any additional execution privileges or user interaction. This means that any user with access to the system can exploit this vulnerability to execute arbitrary code with kernel-level privileges, effectively compromising the entire system. The lack of user interaction requirement makes this vulnerability particularly dangerous as it can be exploited automatically without the need for social engineering or user deception. The vulnerability affects systems running the affected graphics memory controller driver where the gmc_mba_ddr.c component is utilized, potentially impacting a wide range of computing devices including servers, workstations, and embedded systems that rely on this memory management functionality.
Security mitigations for this vulnerability should focus on implementing proper authorization checks within the memory management request handling code, specifically within the gmc_ddr_handle_mba_mr_req function. The fix requires strengthening the validation mechanisms to ensure that all memory management requests are properly authenticated and authorized before processing. This includes implementing proper access control lists, validating request origins, and ensuring that memory operations cannot be manipulated by unprivileged users. Organizations should also consider applying immediate patches or updates to their graphics memory controller drivers, as recommended by the vendor or security advisory. System administrators should monitor for any unusual memory management activities or privilege escalation attempts that could indicate exploitation attempts. The vulnerability aligns with CWE-284 which addresses improper access control, and could be categorized under ATT&CK technique T1068 for local privilege escalation. Additionally, this vulnerability demonstrates characteristics of privilege escalation through kernel exploitation, making it a critical concern for system security and requiring immediate attention from security teams to prevent potential system compromise.