ALSA: usb-audio Null Pointer Dereference Vulnerability in Kernel
Summary
GSD-2021-1002331: ALSA: usb-audio: fix null pointer dereference on pointer cs_desc. Affects Kernel versions < 58fa50de595f152900594c28ec9915c169643739. No fix is published. How to fix ↓
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Background
The ALSA (Advanced Linux Sound Architecture) is a software framework and part of the Linux kernel that provides an API for sound card drivers. It allows applications to communicate with audio devices and perform various audio-related tasks. The usb-audio driver is responsible for handling USB audio devices in the kernel. This vulnerability affects the usb-audio driver in the Linux Kernel.
Vulnerability Detail
The vulnerability identified as GSD-2021-1002331 is a null pointer dereference issue in the usb-audio driver of the Linux Kernel. A null pointer dereference occurs when a program attempts to access or dereference a null pointer, resulting in a crash or potential code execution. In this case, the vulnerability occurs when accessing the 'cs_desc' pointer, which can be null under certain conditions. An attacker could potentially exploit this vulnerability to cause a denial-of-service (DoS) condition or execute arbitrary code with kernel privileges.
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.
Conclusion
The ALSA usb-audio null pointer dereference vulnerability in the Linux Kernel can be mitigated by updating the kernel to version v5.15.5 or later. This update resolves the issue and prevents potential exploitation. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
ALSA (Advanced Linux Sound Architecture) is a software framework and part of the Linux kernel that provides an API for sound card drivers.
The usb-audio driver is responsible for handling USB audio devices in the Linux Kernel.
A null pointer dereference occurs when a program attempts to access or dereference a null pointer, resulting in a crash or potential code execution.
The vulnerability could lead to a denial-of-service (DoS) condition or allow an attacker to execute arbitrary code with kernel privileges.
To fix this vulnerability, update the Linux Kernel to version v5.15.5 or later.
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