CVE-2026-0030 in Android
Summary
by MITRE • 03/02/2026
In __host_check_page_state_range of mem_protect.c, there is a possible out of bounds write due to an incorrect bounds check. 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 • 03/10/2026
The vulnerability identified as CVE-2026-0030 represents a critical security flaw within the memory protection subsystem of a target operating system or firmware environment. This issue manifests in the host_check_page_state_range function located within the mem_protect.c source file, where an insufficient bounds validation mechanism exists that permits unauthorized memory manipulation. The flaw constitutes a classic out-of-bounds write condition that can be exploited to gain elevated privileges without requiring any additional user permissions or interactive elements for successful exploitation. This vulnerability directly impacts the system's memory management integrity and represents a significant threat to overall system security.
The technical implementation of this vulnerability stems from a flawed boundary checking mechanism that fails to properly validate memory access ranges during page state validation operations. When the host_check_page_state_range function processes memory page state information, it performs inadequate range verification that allows malicious code to write data beyond the intended memory boundaries. This incorrect bounds check creates an exploitable condition where an attacker can manipulate memory locations that should remain protected, potentially overwriting critical system data structures or executable code segments. The vulnerability operates at a low system level where memory protection mechanisms are supposed to enforce strict boundaries, yet the flawed implementation allows bypass of these essential safeguards.
The operational impact of this vulnerability extends significantly beyond simple memory corruption, as it enables local privilege escalation without requiring any additional execution privileges or user interaction. This means that any user with local access to the system can potentially leverage this flaw to elevate their privileges to system-level access, effectively compromising the entire system. The lack of user interaction requirements makes this vulnerability particularly dangerous as it can be exploited automatically without the need for social engineering or additional attack vectors. The exploitation process typically involves crafting specific memory access patterns that trigger the out-of-bounds write condition, potentially leading to arbitrary code execution or complete system compromise. This vulnerability directly violates fundamental security principles of privilege separation and memory isolation that are essential for maintaining system integrity.
Mitigation strategies for CVE-2026-0030 should focus on immediate code-level fixes that address the root cause of the bounds checking failure. The primary recommendation involves implementing proper boundary validation within the host_check_page_state_range function to ensure all memory accesses remain within predefined limits. Security patches should include comprehensive input validation that verifies all memory page state parameters before any write operations are permitted. Additionally, defensive programming techniques such as bounds checking loops, memory sanitization, and stack canaries should be implemented to prevent similar vulnerabilities from occurring in other system components. System administrators should also implement monitoring solutions to detect anomalous memory access patterns that could indicate exploitation attempts. The vulnerability aligns with CWE-129 which specifically addresses insufficient bounds checking, and represents a potential pathway for attackers to achieve privilege escalation as outlined in the MITRE ATT&CK framework under privilege escalation techniques. Organizations should prioritize patch deployment and conduct thorough security assessments to identify any potential exploitation attempts that may have already occurred.