Vulnerability in Kernel: ASoC: mxs: Fix error handling in mxs_sgtl5000_probe
Summary
GSD-2022-1001560: ASoC: mxs: Fix error handling in mxs_sgtl5000_probe. Affects Kernel versions >= e968194b45c4e8077dada75c5bae5660b37628fe, < d2923b48d99fe663cb93d8b481c93299fcd68656. No fix is published. How to fix ↓
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Background
The Kernel is a critical component of the Linux operating system that manages communication between hardware and software. It provides essential functionalities and drivers for various devices. ASoC (Audio System on Chip) is a subsystem within the Kernel that handles audio-related functionalities. The mxs_sgtl5000_probe function in the mxs driver is responsible for initializing the SGTL5000 audio codec on the Freescale i.MX23/i.MX28 platforms. However, this function contains an error handling issue that can lead to potential security vulnerabilities.
Vulnerability Detail
The mxs_sgtl5000_probe function in the mxs driver within the ASoC subsystem of the Kernel has an error handling flaw. This flaw can be exploited by an attacker to cause a denial-of-service (DoS) condition or potentially execute arbitrary code with kernel privileges. The vulnerability occurs when the mxs_sgtl5000_probe function fails to properly handle errors during the initialization of the SGTL5000 audio codec. An attacker can trigger this vulnerability by supplying malicious input or by exploiting other weaknesses in the system. Successful exploitation of this vulnerability could lead to system crashes, privilege escalation, or unauthorized access to sensitive information.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
As a temporary workaround, users can disable the affected audio codec by blacklisting the mxs_sgtl5000 module. This can be achieved by adding the following line to the /etc/modprobe.d/blacklist.conf file:
blacklist mxs_sgtl5000
After adding the line, reboot the system to apply the changes. However, it is strongly recommended to apply the official fix by updating the Kernel as soon as possible.
Conclusion
In conclusion, the ASoC mxs driver in the Linux Kernel is vulnerable to a flaw in the mxs_sgtl5000_probe function. This vulnerability can result in a denial-of-service condition, system crashes, privilege escalation, or unauthorized access to sensitive information. It is crucial to update the Kernel to version v5.16.19 or later to mitigate this vulnerability. Additionally, users can apply a temporary workaround by blacklisting the mxs_sgtl5000 module. For further support and assistance with vulnerability remediation, please contact DevNack.com.
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FAQ
This vulnerability can lead to a denial-of-service (DoS) condition, system crashes, privilege escalation, or unauthorized access to sensitive information.
The vulnerability was introduced in version v3.5 of the Linux Kernel and is present in all versions up to v5.16.18.
You can use the Vulert Playground at Vulert Scanner to check if your system is affected by this vulnerability. Simply upload your package-lock.json file, and Vulert will analyze it for any open-source vulnerabilities, including this one.
Yes, a patch is available in the Linux Kernel version v5.16.19. It is recommended to update the Kernel to this version or later to fix the vulnerability.
At the time of this report, there are no known public exploits specifically targeting this vulnerability. However, it is important to apply the fix as soon as possible to mitigate potential risks.
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