Command Ring Pointer Corruption Vulnerability in xhci
Summary
GSD-2021-1002152: xhci: Fix command ring pointer corruption while aborting a command. Affects Kernel versions < ff0e50d3564f33b7f4b35cadeabd951d66cfc570. No fix is published. How to fix ↓
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Background
The xhci package is a component of the Linux Kernel that provides support for USB 3.0 and later versions. It includes the xHCI (eXtensible Host Controller Interface) driver, which manages communication between USB devices and the host system. The xHCI driver utilizes a command ring to issue commands to USB devices and receive their responses.
Vulnerability Detail
The Command Ring Pointer Corruption vulnerability in xhci occurs when a command is aborted, leading to corruption of the command ring pointer. This vulnerability can be exploited by an attacker to manipulate the command ring pointer and potentially execute arbitrary code or cause a denial of service. The vulnerability was discovered in the Linux Kernel version prior to v5.15.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
There is no specific workaround available for this vulnerability. It is advised to apply the fix by updating the Linux Kernel.
Conclusion
The Command Ring Pointer Corruption vulnerability in xhci can lead to command ring pointer manipulation, potentially enabling arbitrary code execution or denial of service attacks. It is crucial to update the Linux Kernel to version v5.15 or later to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
This vulnerability can potentially allow an attacker to execute arbitrary code or cause a denial of service by manipulating the command ring pointer.
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 and Vulert will analyze it for any open-source vulnerabilities, including this one.
At the time of this report, there are no known public exploits for this vulnerability. However, it is important to apply the fix as soon as possible to mitigate any potential risks.
Yes, this vulnerability can be exploited remotely if the affected system is accessible over the network. It is recommended to update the Linux Kernel to prevent any potential remote exploitation.
The recommended solution is to update the Linux Kernel to the fixed version. There are no known alternative solutions or workarounds available for this vulnerability.
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