CVE-2022-20581 in Android
Summary
by MITRE • 12/16/2022
In the Pixel camera driver, there is a possible use after free due to a logic error in the code. 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-245916120References: N/A
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Analysis
by VulDB Data Team • 04/22/2026
The vulnerability identified as CVE-2022-20581 represents a critical use-after-free condition within the Pixel camera driver component of the Android operating system. This flaw exists in the Android kernel and manifests as a logic error that allows for improper memory management during camera driver operations. The vulnerability is particularly concerning because it can potentially enable local privilege escalation to system-level privileges without requiring any user interaction for exploitation. The Android ID A-245916120 tracks this specific issue within Google's internal vulnerability management system, indicating its recognition as a significant security concern affecting Pixel devices.
The technical implementation of this vulnerability stems from improper handling of memory allocation and deallocation within the camera driver's code logic. When the driver processes camera-related operations, it fails to properly validate memory references after objects have been freed, creating a scenario where subsequent memory access operations can reference already deallocated memory locations. This memory management error creates a potential attack surface that adversaries can exploit to execute arbitrary code with elevated privileges. The vulnerability's classification as a logic error rather than a simple buffer overflow suggests that the flaw exists in the program's control flow rather than in direct memory manipulation, making it potentially more subtle and harder to detect during routine security assessments.
From an operational perspective, this vulnerability poses significant risks to device security and user privacy. The local escalation of privilege capability means that an attacker with minimal access to the device could potentially gain system-level control, enabling them to access sensitive data, modify system files, or install malicious applications. The fact that no user interaction is required for exploitation makes this vulnerability particularly dangerous as it can be triggered automatically during normal camera usage or system operations. This type of vulnerability directly impacts the Android Security Model's principle of least privilege and can compromise the integrity of the entire device security framework.
The mitigation strategies for CVE-2022-20581 should focus on both immediate patching and defensive measures. Organizations and device users must ensure that all affected Pixel devices receive the relevant security updates from Google as soon as they become available. The vulnerability's alignment with CWE-416, which addresses use-after-free conditions, indicates that traditional memory safety techniques such as proper object lifetime management and memory validation should be implemented. From an ATT&CK framework perspective, this vulnerability maps to privilege escalation techniques and could be leveraged as part of broader attack chains targeting mobile device security. Additionally, implementing runtime protections such as memory safety checks and address space layout randomization can provide additional defense-in-depth measures against exploitation attempts.