ASoC: ops: Reject out of bounds values in snd_soc_put_volsw_sx() - Kernel
Summary
GSD-2022-1000136: ASoC: ops: Reject out of bounds values in snd_soc_put_volsw_sx(). Affects Kernel versions < 9a12fcbf3c622f9bf6b110a873d62b0cba93972e. No fix is published. How to fix ↓
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Background
The Kernel is a crucial component of the Linux operating system that acts as a bridge between the hardware and software layers. It provides essential functionalities, such as device drivers, memory management, and process scheduling. The ASoC (Audio System on Chip) subsystem within the Kernel is responsible for managing audio-related operations on various hardware platforms. One of the functions in this subsystem, snd_soc_put_volsw_sx(), is used to handle volume control for audio devices. However, a vulnerability has been identified in this function that allows out of bounds values to be accepted, potentially leading to security issues.
Vulnerability Detail
The vulnerability in snd_soc_put_volsw_sx() arises from the lack of proper validation for input values. Attackers can exploit this by providing malicious input that exceeds the expected bounds, leading to buffer overflows or other memory-related vulnerabilities. This could result in arbitrary code execution, privilege escalation, or denial of service attacks. The impact and attack plausibility of this vulnerability have not been proven yet, but it is essential to address it to ensure the security of audio operations in the Kernel.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
As a temporary workaround, users can apply input validation checks manually before passing values to snd_soc_put_volsw_sx(). This can be done by ensuring that the input values fall within the expected bounds. Here is an example of how the validation can be performed in C code:
if (value < MIN_VALUE || value > MAX_VALUE) {
// Handle error or reject the value
}
Conclusion
The vulnerability in snd_soc_put_volsw_sx() within the Kernel can allow out of bounds values, potentially leading to security issues. It is crucial to update the Linux Kernel to the fixed version or apply the recommended workaround to mitigate this vulnerability. Regular security assessments and following secure coding practices are essential to ensure the overall security of the system. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The impact of this vulnerability can vary depending on the specific exploitation scenario. It could potentially lead to arbitrary code execution, privilege escalation, or denial of service attacks.
You can use Vulert's playground at Vulert 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.
At the time of this report, there is no known exploit for this vulnerability. However, it is crucial to address it promptly to prevent potential security breaches.
The recommended mitigation is to update the Linux Kernel to the fixed version mentioned earlier. Additionally, it is good practice to follow secure coding guidelines and perform regular security assessments to identify and address any potential vulnerabilities.
You can find more information about this vulnerability, including the source code changes and discussions, in the GitHub repository of the Cloud Security Alliance's GSD Database. The specific vulnerability details can be accessed at https://github.com/cloudsecurityalliance/gsd-database/blob/main/2022/1000xxx/GSD-2022-1000136.json.
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