CVE-2022-20600 in Android
Summary
by MITRE • 12/16/2022
In TBD of TBD, there is a possible out of bounds write due to memory corruption. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-239847859References: N/A
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Analysis
by VulDB Data Team • 04/22/2026
This vulnerability represents a critical memory corruption flaw within the Android kernel that manifests as an out-of-bounds write condition. The issue occurs during the processing of certain kernel operations where insufficient bounds checking allows malicious code to write data beyond the allocated memory boundaries. Such memory corruption vulnerabilities are particularly dangerous because they can be exploited to gain unauthorized access to system privileges and potentially execute arbitrary code with elevated permissions. The vulnerability affects the Android kernel components and requires system execution privileges for exploitation, indicating that an attacker must already have some level of access to the system before leveraging this specific flaw.
The technical nature of this vulnerability aligns with common software security weaknesses that fall under the CWE-787 category for out-of-bounds write conditions. This type of flaw typically arises when developers fail to properly validate input parameters or memory allocation boundaries during kernel-level operations. The Android kernel's memory management subsystem becomes vulnerable when handling specific data structures or system calls that do not adequately enforce buffer size limitations. Attackers can manipulate input data to cause the kernel to write beyond intended memory regions, potentially overwriting critical system data structures or function pointers.
The operational impact of this vulnerability extends beyond simple memory corruption, as it enables local privilege escalation to system-level privileges. This means that an attacker who can execute code on the device with standard user privileges could potentially exploit this flaw to gain root access. The exploitation does not require user interaction, making it particularly concerning from a security perspective as it can be automated and potentially triggered through various attack vectors within the kernel space. The vulnerability's classification as requiring system execution privileges for exploitation suggests that it operates at a low-level kernel function that typically requires elevated access to manipulate.
From a threat modeling perspective, this vulnerability maps to several ATT&CK techniques including privilege escalation and kernel exploitation. The attack surface encompasses kernel modules that handle memory allocation and data processing operations, making it a prime target for sophisticated attackers seeking persistent system control. The lack of user interaction requirement makes this vulnerability particularly dangerous for automated exploitation campaigns and increases the potential attack surface significantly. Organizations should consider this vulnerability as a high-priority threat requiring immediate attention and remediation.
The mitigation strategy for this vulnerability primarily involves applying the appropriate security patches and kernel updates provided by Android security teams. System administrators should prioritize patch deployment across all affected Android devices and kernel versions to prevent exploitation. Additionally, monitoring for anomalous kernel memory behavior and implementing runtime protection mechanisms can help detect potential exploitation attempts. The vulnerability's nature as a memory corruption issue also suggests that implementing memory safety features such as stack canaries, address space layout randomization, and kernel address space layout randomization could provide additional defense-in-depth measures. Regular security audits of kernel code and input validation routines should be conducted to identify similar potential vulnerabilities before they can be exploited by malicious actors.