CVE-2026-56914 in Android
Summary
by MITRE • 09/15/2026
In multiple locations, there is a possible use-after-free due to improper locking. 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 • 09/15/2026
The vulnerability described represents a critical security flaw characterized by a race condition stemming from improper synchronization mechanisms within the software's memory management subsystem. Specifically, the issue involves a use-after-free error that occurs when multiple threads or processes attempt to access and manipulate shared resources without adequate locking protocols. In concurrent programming environments, proper mutexes or locks are essential to ensure atomicity of operations involving dynamic memory allocation and deallocation. When these synchronization primitives are missing, incorrectly implemented, or applied inconsistently across different code paths, the system enters a state where one thread may free a block of memory while another thread is still holding a reference to it. This race condition allows an attacker to exploit the window between the deallocation of the memory and its potential reallocation for other purposes, leading to undefined behavior that can be leveraged for malicious intent.
From a technical perspective, this flaw aligns with Common Weakness Enumeration (CWE) identifiers such as CWE-416, which denotes Use After Free, and often intersects with CWE-362, indicating Concurrent Execution using Shared Resource with Improper Synchronization Race Condition. The core of the vulnerability lies in the failure to enforce mutual exclusion during critical sections where object lifecycles are managed. When a pointer is dereferenced after its underlying memory has been released back to the heap allocator, the program may read stale data or execute corrupted control flow instructions. In modern operating systems and complex applications, this can lead to arbitrary code execution because an attacker might be able to control what gets allocated in that freed memory slot through careful heap grooming techniques. By manipulating the allocation patterns of other processes or internal structures, the adversary can place shellcode or specific gadget chains into the reclaimed memory space, thereby hijacking the program's execution flow upon dereference.
The operational impact of this vulnerability is severe due to its potential for local privilege escalation without requiring user interaction or additional privileges from the attacker. This means that any authenticated user on the system, regardless of their current permission level, can potentially exploit this flaw to gain higher-level access, such as root or SYSTEM rights. The absence of a requirement for user interaction significantly lowers the barrier for exploitation, making it suitable for automated attacks and worm-like propagation within compromised networks if the vulnerable service is exposed locally. Once privilege escalation is achieved, an attacker gains full control over the affected system, allowing them to install backdoors, exfiltrate sensitive data, modify security configurations, or pivot to other systems on the network. This level of access effectively compromises the confidentiality, integrity, and availability of all resources protected by that user account's privileges.
Mitigation strategies must focus on both immediate patching and long-term architectural improvements. The primary remediation is for vendors to release a software update that corrects the locking logic in the affected components. Developers should audit code paths involving dynamic memory management to ensure that every access to shared resources is protected by appropriate synchronization primitives, such as mutexes, semaphores, or spinlocks, depending on the concurrency model used. Implementing static analysis tools and fuzz testing during the development lifecycle can help identify similar race conditions before deployment. Additionally, enabling security features like Address Space Layout Randomization (ASLR), Data Execution Prevention (DEP), and Control Flow Guard (CFG) can mitigate the impact of exploitation by making it harder for attackers to predict memory layouts or execute injected code. For organizations relying on this software, applying vendor-provided patches promptly is critical, alongside monitoring system logs for unusual activity that might indicate an attempted exploit in environments where patching cannot be immediately applied.