Vulnerability in Kernel package: ASoC: max9759: fix underflow in speaker_gain_control_put()
Summary
GSD-2022-1000676: ASoC: max9759: fix underflow in speaker_gain_control_put(). Affects Kernel versions >= fa8d915172b8c10ec0734c4021e99e9705023b07, < f114fd6165dfb52520755cc4d1c1dfbd447b88b6. No fix is published. How to fix ↓
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Background
The Kernel package is a crucial component of the Linux operating system, responsible for managing the system's core functionality. It provides essential services and functions to enable the proper functioning of hardware, software, and applications. The ASoC (Audio System on Chip) subsystem within the Kernel package handles audio-related functionalities. One of the components in ASoC is the max9759 driver, which controls the speaker gain. This driver is susceptible to an underflow vulnerability in the speaker_gain_control_put() function.
Vulnerability Detail
The vulnerability in the max9759 driver's speaker_gain_control_put() function allows for an underflow condition. An attacker could exploit this vulnerability by providing malicious input, leading to an underflow of a variable used for speaker gain control. This underflow could result in unexpected behavior, such as excessive volume or distortion, potentially causing harm to the user's hearing or damaging the audio hardware. The vulnerability was introduced in version v4.17 of the Linux Kernel and has been fixed in version v5.16.8.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
As this vulnerability has been fixed in the latest version of the Linux Kernel, there is no specific workaround available. It is strongly advised to update the Kernel package to the latest version to mitigate the risk.
Conclusion
The vulnerability in the Kernel package's ASoC max9759 driver's speaker_gain_control_put() function could lead to unexpected audio behavior and potential harm to the user or audio hardware. It is crucial to update the Linux Kernel package to version v5.16.8 or later to fix this vulnerability. Applying the necessary security patches ensures the elimination of the underflow issue and safeguards the system against potential exploitation. For additional support, please contact DevNack.com.
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FAQ
The vulnerability could lead to unexpected behavior in audio output, such as excessive volume or distortion, which may cause harm to the user's hearing or damage the audio hardware.
You can use Vulert's playground (https://vulert.com/scanner) to check if your system is affected by this vulnerability. Vulert analyzes the manifest file (e.g., package-lock.json) of your application and provides real-time alerts for open-source vulnerabilities, including this one.
No, this vulnerability requires local access to the affected system. It cannot be exploited remotely over a network.
There are no known instances of this vulnerability being exploited in the wild. However, it is always recommended to apply security patches promptly to mitigate potential risks.
For further support and assistance in vulnerability remediation, you can reach out to info@devnack.com. Our team of experts will be happy to assist you.
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