CVE-2022-20227: RNDIS USB Gadget Heap Buffer Overflow in Android Linux Kernel
Summary
CVE-2022-20227: In USB driver, there is a possible out of bounds read due to a heap buffer overflow. Affects :linux_kernel: versions >= :0, < :2022-07-05. Fixed in :2022-07-05. How to fix ↓
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Background
The RNDIS USB Gadget is a feature in the Android Linux Kernel that enables USB tethering functionality. It allows users to share their device's internet connection with other devices via USB. However, a vulnerability has been discovered in the USB driver, which can lead to a heap buffer overflow. This vulnerability affects the Android ecosystem and requires user execution privileges to exploit. No user interaction is necessary for the exploitation to occur.
Vulnerability Detail
The vulnerability in the RNDIS USB Gadget driver is an out-of-bounds read issue caused by a heap buffer overflow. This can result in local information disclosure, potentially exposing sensitive kernel memory contents. An attacker with user execution privileges can exploit this vulnerability to gain unauthorized access to kernel memory. The vulnerability was introduced in the Android ecosystem and was fixed on July 5, 2022.
How To Fix
Minimum fixed version
:2022-07-05
This is the first release that contains the fix.
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Workaround
There is no specific workaround provided for this vulnerability. It is recommended to apply the fix mentioned in the 'how_to_fix' section to address the issue.
Conclusion
The RNDIS USB Gadget vulnerability in the Android Linux Kernel can lead to local information disclosure and unauthorized access to kernel memory. To mitigate this vulnerability, it is crucial to update the affected Android devices to a version that includes the fix. For further assistance and support on vulnerability remediation, please contact DevNack.com.
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FAQ
This vulnerability can lead to local information disclosure, potentially exposing sensitive kernel memory contents. An attacker with user execution privileges can exploit this vulnerability to gain unauthorized access to kernel memory.
Yes, it is recommended to update your Android device to a version that includes the fix for this vulnerability. By updating the kernel to a version that includes the necessary commits, you can protect your device from potential exploitation.
No, user interaction is not needed for exploitation. An attacker with user execution privileges can exploit this vulnerability without any user interaction.
This vulnerability was fixed on July 5, 2022, with the implementation of the necessary commits in the Android kernel.
The vulnerability affects the Android ecosystem. It is recommended to update all affected Android devices to a version that includes the fix.
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