ALSA usx2y: Null Address in free_pages_exact() Vulnerability

Kernel Updated 02 Oct 2025

Summary

03/08/2021

Disclosed on

N/A

Severity

No i

Fix available

Unrated

Severity

Not published

CVSS Score

UVI-2021-1001338: ALSA: usx2y: Don't call free_pages_exact() with NULL address. Affects Kernel versions < 88262229b778f4f7a896da828d966f94dcb35d19. No fix is published. How to fix ↓

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Background

ALSA (Advanced Linux Sound Architecture) is a software framework and part of the Linux kernel that provides an API for sound card drivers. The usx2y driver is used for USB sound devices based on the Tascam USX2Y chipset. This vulnerability affects the usx2y driver in the Linux Kernel.

Vulnerability Detail

The vulnerability in the usx2y driver allows an attacker to call the free_pages_exact() function with a NULL address, leading to a kernel crash or potential privilege escalation. This vulnerability has the potential to be exploited by an attacker with local access to the system.

How To Fix

No fixed version is published for this vulnerability.

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Workaround

There is no known workaround for this vulnerability.

Conclusion

The ALSA usx2y driver in the Linux Kernel is vulnerable to a NULL address issue in the free_pages_exact() function. This vulnerability can potentially lead to a kernel crash or privilege escalation. Users are advised to update their Linux Kernel to version v5.4.134 or later to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.

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