Out-of-Bounds Access in RX Fixup in Linux Kernel
Summary
GSD-2022-1000967: net: usb: aqc111: Fix out-of-bounds accesses in RX fixup. Affects Kernel versions < 36311fe98f55dea9200c69e2dd6d6ddb8fc94080. No fix is published. How to fix ↓
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Background
The Linux Kernel is a widely used open-source operating system kernel that serves as the foundation for various Linux distributions. It provides essential functionality and interfaces for hardware, software, and user applications. The aqc111 driver in the Linux Kernel handles USB network devices based on the Aquantia AQC111 chipset. These devices are commonly used for Ethernet connectivity. However, a vulnerability has been discovered in the RX fixup function of the aqc111 driver, which can lead to out-of-bounds accesses.
Vulnerability Detail
The vulnerability in the RX fixup function of the aqc111 driver allows for out-of-bounds accesses. This means that an attacker could potentially manipulate the memory beyond the intended boundaries of the RX fixup function. Exploiting this vulnerability could lead to various consequences, such as crashing the system, executing arbitrary code, or gaining elevated privileges. The vulnerability has been fixed in Linux Kernel version v5.17.4 by commit 36311fe98f55dea9200c69e2dd6d6ddb8fc94080.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
As a workaround, users can disable or disconnect any USB network devices based on the Aquantia AQC111 chipset until the Linux Kernel is updated to a fixed version. This will prevent potential exploitation of the vulnerability.
Conclusion
The out-of-bounds access vulnerability in the RX fixup function of the aqc111 driver in the Linux Kernel can have serious consequences, including system crashes, arbitrary code execution, or privilege escalation. It is crucial to update the Linux Kernel to version v5.17.4 or later to mitigate this vulnerability. Alternatively, users can temporarily disable or disconnect USB network devices based on the Aquantia AQC111 chipset. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The vulnerability allows for out-of-bounds accesses, which can lead to system crashes, arbitrary code execution, or privilege escalation.
You can use the Vulert Playground (https://vulert.com/scanner) to check if your system is affected by this vulnerability. Simply upload your package-lock.json file to the playground, and it will analyze the dependencies for any known vulnerabilities.
Yes, the vulnerability has been fixed in Linux Kernel version v5.17.4 by commit 36311fe98f55dea9200c69e2dd6d6ddb8fc94080. Updating to this version or a later one will address the issue.
As a temporary measure, you can disable or disconnect any USB network devices based on the Aquantia AQC111 chipset to prevent potential exploitation of the vulnerability. However, updating the Linux Kernel is the recommended long-term solution.
You can refer to the vulnerability details in the GSD Database (https://github.com/cloudsecurityalliance/gsd-database/blob/main/2022/1000xxx/GSD-2022-1000967.json) for more information and references.
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