ALSA: jack: Access input_dev under mutex
Summary
GSD-2022-1002841: ALSA: jack: Access input_dev under mutex. Affects Kernel versions < 582aea6084cc59fec881204f026816d1219f2348. No fix is published. How to fix ↓
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Background
The ALSA (Advanced Linux Sound Architecture) package is a software framework and part of the Linux kernel that provides an API for sound card drivers. It enables audio functionality on Linux systems, allowing applications to record and play back audio. The ALSA jack component is responsible for handling connections between audio applications and hardware devices. It manages the input and output streams, ensuring proper synchronization and routing of audio data.
However, a vulnerability has been discovered in the ALSA jack component that allows access to the input_dev structure under a mutex. This vulnerability can potentially be exploited by an attacker to gain unauthorized access to sensitive information or perform malicious actions on the affected system.
Vulnerability Detail
The vulnerability in the ALSA jack component arises from improper access to the input_dev structure while holding a mutex. This can lead to various security issues, including information disclosure, privilege escalation, or denial of service. By exploiting this vulnerability, an attacker may be able to manipulate the input_dev structure to gain unauthorized access to sensitive data or execute arbitrary code with elevated privileges.
The vulnerability has been assigned the ID GSD-2022-1002841 and is fixed in Linux Kernel version v5.18.3 by commit 582aea6084cc59fec881204f026816d1219f2348.
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 jack component in the Linux Kernel is vulnerable to improper access to the input_dev structure under a mutex. This vulnerability can have serious security implications, including unauthorized access to sensitive information or execution of arbitrary code with elevated privileges. It is crucial to update the Linux Kernel to version v5.18.3 or later to mitigate this vulnerability. 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 and enables audio functionality on Linux systems.
The ALSA jack component is responsible for handling connections between audio applications and hardware devices. It manages the input and output streams, ensuring proper synchronization and routing of audio data.
The vulnerability allows unauthorized access to the input_dev structure, which can lead to information disclosure, privilege escalation, or denial of service. An attacker could potentially gain access to sensitive data or execute arbitrary code with elevated privileges.
To fix this vulnerability, update the Linux Kernel to version v5.18.3 or later. Obtain the updated kernel source code from the official Linux Kernel repository and compile it for your system. Alternatively, wait for your Linux distribution to provide an updated package with the fixed kernel version.
No specific workaround has been mentioned for this vulnerability.
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