ALSA: gus: fix null pointer dereference on pointer block
Summary
GSD-2021-1002332: ALSA: gus: fix null pointer dereference on pointer block. Affects Kernel versions < 16721797dcef2c7c030ffe73a07f39a65f9323c3. 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 device drivers. It enables sound card functionality, including recording and playback. The gus module in ALSA is responsible for supporting Gravis UltraSound sound cards. This vulnerability affects the gus module in the Linux Kernel.
Vulnerability Detail
The vulnerability in the gus module of ALSA allows for a null pointer dereference on the pointer block. This can lead to a system crash or potential privilege escalation if exploited by an attacker. The vulnerability was discovered and reported, and it has been fixed in the Linux Kernel version v5.15.5 by commit 16721797dcef2c7c030ffe73a07f39a65f9323c3.
How To Fix
No fixed version is published for this vulnerability.
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Conclusion
The ALSA gus module in the Linux Kernel is vulnerable to a null pointer dereference on the pointer block. This vulnerability can lead to system crashes or potential privilege escalation. It is recommended to update the Linux Kernel to version v5.15.5 or later to fix this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
ALSA stands for Advanced Linux Sound Architecture. It is a software framework and part of the Linux kernel that provides an API for sound card device drivers.
The gus module in ALSA is responsible for supporting Gravis UltraSound sound cards.
A null pointer dereference occurs when a program attempts to access or manipulate memory using a null pointer, which points to no memory location. This can lead to crashes or potential security vulnerabilities.
The vulnerability can result in a system crash or potential privilege escalation if exploited by an attacker.
To fix this vulnerability, update the Linux Kernel to version v5.15.5 or later by pulling the latest updates from the official Linux Kernel repository.
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