Vulnerability in phy: qcom-qmp package - Fix Reset-Controller Leak on Probe Errors
Summary
GSD-2022-1003544: phy: qcom-qmp: fix reset-controller leak on probe errors. Affects Kernel versions >= e78f3d15e115e8e764d4b1562b4fa538f2e22f6b, < 2156dc390402043ba5982489c6625adcb0b0975c. No fix is published. How to fix ↓
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Background
The phy: qcom-qmp package is a component of the Linux Kernel ecosystem. It provides support for Qualcomm's QMP (Qualcomm Message Parser) PHYs. These PHYs are responsible for managing the physical layer of communication between devices. The qcom-qmp package is used in various Qualcomm SoCs (System-on-Chips) to handle PHY functionality. However, a vulnerability has been identified in the package that can lead to a reset-controller leak on probe errors.
Vulnerability Detail
The vulnerability in the phy: qcom-qmp package occurs when there are probe errors during initialization. In such cases, the reset-controller is not properly released, leading to a resource leak. This vulnerability can potentially be exploited by an attacker to exhaust system resources, resulting in a denial-of-service condition. The vulnerability was introduced in version v4.12 of the Linux Kernel and has been fixed in version v5.10.121 by commit 2156dc390402043ba5982489c6625adcb0b0975c.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
There is no specific workaround mentioned for this vulnerability. The recommended approach is to apply the fix by updating the Linux Kernel to the patched version.
Conclusion
The vulnerability in the phy: qcom-qmp package can result in a reset-controller leak on probe errors, potentially leading to a denial-of-service condition. It is crucial to update the Linux Kernel to version v5.10.121 or later to fix this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The vulnerability can lead to a reset-controller leak on probe errors, potentially causing a denial-of-service condition by exhausting system resources.
You can use Vulert's playground (https://vulert.com/scanner) to check if your application is affected by this vulnerability. Vulert uses a manifest file like package-lock.json to monitor and alert in real-time for open-source vulnerabilities in software.
At the time of this report, there is no known exploit for this vulnerability. However, it is important to apply the fix as soon as possible to mitigate any potential risks.
The vulnerability itself does not involve remote exploitation. However, if an attacker gains access to the affected system, they may be able to trigger the probe errors and exploit the reset-controller leak.
The primary solution is to update the Linux Kernel to the patched version. However, if updating is not feasible in the short term, additional security measures can be implemented, such as network segmentation and access controls, to mitigate the risk of exploitation.
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