NFC: digital: fix possible memory leak in digital_tg_listen_mdaa() - Kernel
Summary
GSD-2021-1001795: NFC: digital: fix possible memory leak in digital_tg_listen_mdaa(). Affects Kernel versions >= 1c7a4c24fbfd99442cc6e14dc80fcb00f118e8b8, < b7b023e6ff567e991c31cd425b0e1d16779c938b. No fix is published. How to fix ↓
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Background
The Kernel is a critical component of the Linux operating system that provides core functionality and acts as an interface between the hardware and software layers. It is responsible for managing system resources, handling device drivers, and facilitating communication between different software components. The NFC (Near Field Communication) subsystem within the Kernel enables short-range wireless communication between devices. The digital_tg_listen_mdaa() function is a part of the digital driver in the NFC subsystem and is used for listening to target devices. However, a possible memory leak has been identified in this function, which could lead to resource exhaustion and potential system instability.
Vulnerability Detail
The vulnerability in digital_tg_listen_mdaa() arises from a potential memory leak. When this function is called, it may allocate memory for certain data structures but fail to deallocate them properly under certain conditions. This can result in a gradual accumulation of unreleased memory, leading to resource exhaustion over time. An attacker could potentially exploit this vulnerability to exhaust system resources, causing denial of service conditions or even arbitrary code execution. The impact and attack plausibility of this vulnerability have not been proven yet, but it is essential to address it to ensure system stability and security.
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. The recommended approach is to apply the fix by updating the Kernel to the latest version.
Conclusion
In conclusion, the NFC: digital: fix possible memory leak in digital_tg_listen_mdaa() vulnerability in the Kernel poses a potential risk of resource exhaustion and system instability. It is crucial to update the Kernel to version v4.14.252 or later to address this issue. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The Kernel is a critical component of the Linux operating system that provides core functionality and acts as an interface between the hardware and software layers.
NFC (Near Field Communication) is a short-range wireless communication technology that enables devices to exchange data over a distance of a few centimeters.
digital_tg_listen_mdaa() is a function in the digital driver of the NFC subsystem in the Linux Kernel. It is used for listening to target 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 accumulation of unreleased memory, resulting in resource exhaustion and potential system instability.
This vulnerability could lead to resource exhaustion, causing denial of service conditions or even arbitrary code execution. However, the actual impact and attack plausibility have not been proven yet.
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