ASoC: rt711-sdca Kernel NULL Pointer Dereference Vulnerability
Summary
GSD-2022-1004378: ASoC: rt711-sdca: fix kernel NULL pointer dereference when IO error. Affects Kernel versions < 269be8b2907378adf72d7347cfa43ef230351a06. No fix is published. How to fix ↓
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Background
The ASoC (Audio System on Chip) framework in the Linux Kernel is responsible for managing audio functionality on various hardware platforms. One of the supported codecs is rt711-sdca. This codec is used in devices to enable audio input and output capabilities. However, a vulnerability has been discovered in the rt711-sdca driver that can lead to a kernel NULL pointer dereference when an input/output (IO) error occurs.
Vulnerability Detail
The vulnerability in the rt711-sdca driver arises from a lack of proper error handling when IO errors occur. When such an error happens, a NULL pointer dereference can occur in the kernel, leading to a system crash or potential privilege escalation. An attacker with local access to the affected system could potentially exploit this vulnerability to crash the system or gain elevated privileges.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
There is no known workaround for this vulnerability. It is essential to apply the recommended fix by updating the Linux Kernel to a patched version.
Conclusion
The ASoC rt711-sdca Kernel NULL Pointer Dereference Vulnerability can lead to system crashes or potential privilege escalation. It is crucial to update the Linux Kernel to a patched version to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
ASoC stands for Audio System on Chip. It is a framework in the Linux Kernel that manages audio functionality on various hardware platforms.
rt711-sdca is a codec supported by the ASoC framework in the Linux Kernel. It is used in devices to enable audio input and output capabilities.
A NULL pointer dereference occurs when a program attempts to access or manipulate memory using a pointer that points to NULL (a memory address with no assigned value). This can lead to a system crash or potential security vulnerabilities.
The vulnerability can result in a system crash or potential privilege escalation. An attacker with local access to the affected system could exploit this vulnerability to crash the system or gain elevated privileges.
To fix this vulnerability, update the Linux Kernel to version v5.15.56 or later. Apply the fix provided in commit 269be8b2907378adf72d7347cfa43ef230351a06.
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