ASoC Codecs wcd934x: Missing of_node_put() in wcd934x_codec_parse_data
Summary
GSD-2022-1001250: ASoC: codecs: wcd934x: Add missing of_node_put() in wcd934x_codec_parse_data. Affects Kernel versions >= a61f3b4f476eceb25274161e5a53a8d18e42610b, < f8e89d84ea83c51ba3ba97ff154f7aa679326760. No fix is published. How to fix ↓
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Background
ASoC (Audio System on Chip) is a subsystem in the Linux kernel that provides support for audio devices integrated into system-on-chip (SoC) platforms. The wcd934x codec is a driver for Qualcomm WCD934x audio codecs. These codecs are commonly found in Qualcomm Snapdragon-based devices. The wcd934x_codec_parse_data function is responsible for parsing device tree data for the wcd934x codec. However, there is a missing of_node_put() call in this function, which can lead to a reference count leak and potential resource exhaustion.
Vulnerability Detail
The missing of_node_put() call in wcd934x_codec_parse_data can result in a reference count leak, which can lead to resource exhaustion. An attacker could potentially exploit this vulnerability to exhaust system resources, causing a denial-of-service (DoS) condition. The impact and attack plausibility of this vulnerability have not been proven yet.
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 ASoC wcd934x codec is vulnerable to a missing of_node_put() call in the wcd934x_codec_parse_data function. This can lead to a reference count leak and potential resource exhaustion. To fix this vulnerability, the missing call needs to be added in the function. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
ASoC (Audio System on Chip) is a subsystem in the Linux kernel that provides support for audio devices integrated into system-on-chip (SoC) platforms.
The wcd934x codec is a driver for Qualcomm WCD934x audio codecs commonly found in Qualcomm Snapdragon-based devices.
The impact of this vulnerability is a potential denial-of-service (DoS) condition due to resource exhaustion.
This vulnerability can be fixed by adding the missing of_node_put() call in the wcd934x_codec_parse_data function.
No specific workaround has been mentioned for this vulnerability.
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