CVE-2022-20009: Android Linux Kernel - USB Gadget Subsystem Out of Bounds Write
Summary
CVE-2022-20009: In various functions of the USB gadget subsystem, there is a possible out of bounds write due to a missing bounds check. Affects :linux_kernel: versions >= :0, < :2022-05-05. Fixed in :2022-05-05. How to fix ↓
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Background
The Android Linux Kernel is a key component of the Android operating system that provides the core functionality and interfaces with hardware devices. The USB gadget subsystem is responsible for managing USB device functionality on Android devices. It allows Android devices to act as USB devices and provides support for various USB gadget functions. These functions enable communication and data transfer between the Android device and other USB hosts.
This vulnerability specifically affects the USB gadget subsystem in the Android Linux Kernel.
Vulnerability Detail
The vulnerability in the USB gadget subsystem arises from a missing bounds check in various functions. This missing check allows for an out of bounds write, which can lead to a buffer overflow during the data transfer phase. An attacker can exploit this vulnerability to perform a local escalation of privilege without requiring additional execution privileges. Notably, user interaction is not necessary for exploitation.
The lack of proper bounds checking in the affected functions poses a significant security risk as it can be leveraged to overwrite critical memory regions, potentially leading to arbitrary code execution or other malicious activities.
How To Fix
Minimum fixed version
:2022-05-05
This is the first release that contains the fix.
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Workaround
No specific workaround has been provided for this vulnerability. It is recommended to apply the available patches to the Android Linux Kernel as mentioned in the 'how_to_fix' section.
Conclusion
The Android Linux Kernel's USB gadget subsystem is vulnerable to an out of bounds write issue, which can lead to a local escalation of privilege. It is recommended to apply the provided patches to the Android Linux Kernel to mitigate this vulnerability. Failure to address this vulnerability may result in unauthorized access, data theft, or other malicious activities. For further assistance or support in vulnerability remediation, please contact DevNack.com.
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FAQ
This vulnerability allows for a local escalation of privilege on Android devices. An attacker can exploit the vulnerability to gain elevated privileges without requiring additional execution privileges. This can lead to unauthorized access, data theft, or other malicious activities.
No, user interaction is not needed for exploitation of this vulnerability. An attacker can exploit the vulnerability without any user involvement.
The vulnerability affects Android devices that utilize the Android Linux Kernel. However, the impact may vary depending on the specific device and its kernel version. It is recommended to apply the provided patches to mitigate the vulnerability.
No, this vulnerability requires local access to the Android device to exploit it. Remote exploitation is not possible.
There are no known instances of this vulnerability being exploited in the wild. However, it is crucial to apply the patches to prevent potential exploitation.
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