USB-Conn-GPIO: NULL Pointer Dereference of Charger in Kernel
Summary
GSD-2021-1001203: usb: common: usb-conn-gpio: fix NULL pointer dereference of charger. Affects Kernel versions < 1a133a0996d6b4c83509d570ed4edcba34c44f25. No fix is published. How to fix ↓
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Background
The Kernel is a critical component of the Linux operating system that manages communication between hardware and software. It provides essential functionalities for device drivers, memory management, process scheduling, and more. The USB-Conn-GPIO module is a common USB driver that handles USB connections and GPIO (General Purpose Input/Output) operations. It allows devices to be connected and disconnected dynamically. However, a vulnerability has been discovered in the USB-Conn-GPIO module that can lead to a NULL pointer dereference of the charger.
Vulnerability Detail
The vulnerability in the USB-Conn-GPIO module arises from a NULL pointer dereference of the charger. When certain conditions are met, the module fails to handle a NULL pointer correctly, leading to a crash or potential code execution. An attacker could exploit this vulnerability by sending specially crafted USB packets, potentially resulting in a denial-of-service (DoS) attack or arbitrary code execution with kernel privileges. This vulnerability has the potential to impact the stability and security of the system.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
There is no known workaround for this vulnerability. It is essential to apply the fix by updating the Linux Kernel to the recommended version.
Conclusion
The USB-Conn-GPIO module in the Linux Kernel is vulnerable to a NULL pointer dereference of the charger. This vulnerability can lead to a crash or potential code execution, posing a risk of denial-of-service (DoS) attacks or arbitrary code execution with kernel privileges. To mitigate this vulnerability, it is crucial to update the Linux Kernel to version v5.13.4 or later. Regularly updating the Kernel is essential to ensure the latest security patches and bug fixes are applied. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The vulnerability can lead to a NULL pointer dereference of the charger in the USB-Conn-GPIO module. This can result in a crash or potential code execution, potentially allowing an attacker to perform a denial-of-service (DoS) attack or execute arbitrary code with kernel privileges.
You can use the Vulert Playground at Vulert Scanner to check if your system is affected by this vulnerability. Simply upload your package-lock.json file, and Vulert will analyze it for any open-source vulnerabilities, including this one.
Yes, a patch for this vulnerability is available in the Linux Kernel version v5.13.4. Users should update their Kernel installation to the latest stable release that includes this fix.
At the time of this report, there are no known public exploits specifically targeting this vulnerability. However, it is crucial to apply the fix promptly to mitigate any potential risks.
Yes, this vulnerability can be exploited remotely by sending specially crafted USB packets. An attacker could potentially trigger a crash or execute arbitrary code on the target system.
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