NFC: digital: Fix Possible Memory Leak in digital_tg_listen_mdaa()
Summary
GSD-2021-1001999: NFC: digital: fix possible memory leak in digital_tg_listen_mdaa(). Affects Kernel versions >= 1c7a4c24fbfd99442cc6e14dc80fcb00f118e8b8, < 7ab488d7228a9dceb2456867f1f0919decf6efed. No fix is published. How to fix ↓
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Background
The NFC (Near Field Communication) functionality in the Linux Kernel allows devices to communicate wirelessly over short distances. The digital component of NFC handles the digital transmission and reception of data. The digital_tg_listen_mdaa() function is responsible for listening to target devices in NFC communication. However, a vulnerability has been discovered in this function that could lead to a memory leak.
Vulnerability Detail
The vulnerability in digital_tg_listen_mdaa() function could result in a memory leak. When this function is called, it may allocate memory for certain operations but fail to deallocate it properly, leading to a memory leak. Over time, this can exhaust the available memory resources and potentially cause system instability or denial of service. 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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Conclusion
In conclusion, the NFC digital component in the Linux Kernel has a vulnerability in the digital_tg_listen_mdaa() function that can result in a memory leak. It is recommended to update the Kernel to version v5.4.155 or later to fix this vulnerability. For further support on vulnerability remediation, you can contact DevNack.com.
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FAQ
NFC (Near Field Communication) is a technology that enables short-range wireless communication between devices. It is commonly used for contactless payments, data transfer, and other applications.
The digital component of NFC handles the digital transmission and reception of data. It includes functions and protocols for encoding, decoding, and processing NFC data.
digital_tg_listen_mdaa() is a function in the NFC digital component that is responsible for listening to target devices in NFC communication. It allows a device to receive data from other NFC devices.
A memory leak occurs when a program or system fails to release memory that is no longer needed. This can lead to a gradual loss of available memory resources, potentially causing performance issues or system instability.
To update the Linux Kernel, you can follow the official documentation or guidelines provided by your Linux distribution. Typically, it involves using package managers or downloading the latest Kernel version from the official website.
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