CVE-2022-20604 in Android
Summary
by MITRE • 12/16/2022
In SAECOMM_SetDcnIdForPlmn of SAECOMM_DbManagement.c, there is a possible out of bounds read due to a missing bounds check. This could lead to remote information disclosure from a single device with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-230463606References: N/A
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Analysis
by VulDB Data Team • 04/23/2026
The vulnerability identified as CVE-2022-20604 resides within the SAECOMM_DbManagement.c source file in the Android kernel, specifically within the SAECOMM_SetDcnIdForPlmn function. This represents a critical out-of-bounds read flaw that stems from the absence of proper input validation and bounds checking mechanisms. The vulnerability manifests when processing data related to PLMN (Public Land Mobile Network) identification within the telecommunications subsystem, creating a pathway for unauthorized data extraction from affected devices.
The technical implementation of this vulnerability involves a missing bounds check that allows an attacker to access memory locations beyond the intended array or buffer boundaries. When the SAECOMM_SetDcnIdForPlmn function processes incoming data without validating the size or range of input parameters, it can inadvertently read memory that belongs to other variables or system components. This type of flaw falls under the CWE-129 weakness category, specifically addressing insufficient bounds checking, and aligns with the ATT&CK technique T1059.001 for command and scripting interpreter execution. The absence of proper input validation creates a condition where maliciously crafted data can trigger memory access violations that may expose sensitive information.
The operational impact of this vulnerability is particularly concerning as it enables remote information disclosure from a single device without requiring any additional execution privileges or user interaction. This means that an attacker can potentially extract confidential data from the affected Android kernel without needing to establish a foothold through traditional exploitation vectors. The vulnerability affects the Android kernel directly, making it a system-level issue that impacts all applications and services running within the device's operating environment. The lack of user interaction requirement significantly increases the exploitability potential, as the vulnerability can be triggered through network-based attacks or malicious communication protocols without requiring any user engagement.
Mitigation strategies for this vulnerability should focus on implementing comprehensive bounds checking mechanisms within the SAECOMM_SetDcnIdForPlmn function and similar telecommunications-related components. The primary recommendation involves adding proper input validation to ensure that all array accesses are within valid memory boundaries before any data processing occurs. Security patches should be applied immediately to address the missing bounds check, and developers should implement defensive programming practices that include buffer size validation, array index verification, and proper memory access controls. Additionally, system administrators should monitor for any anomalous network traffic patterns that might indicate exploitation attempts and consider implementing network segmentation to limit potential attack surface. The vulnerability's classification as a remote information disclosure threat underscores the importance of applying security updates promptly and maintaining comprehensive monitoring of system integrity to prevent unauthorized data access.