Memory Leak Vulnerability in NFC Digital Component of Linux Kernel
Summary
UVI-2021-1001856: NFC: digital: fix possible memory leak in digital_tg_listen_mdaa(). Affects Kernel versions >= 1c7a4c24fbfd99442cc6e14dc80fcb00f118e8b8, < 3f2960b39f22e26cf8addae93c3f5884d1c183c9. No fix is published. How to fix ↓
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Background
The Linux Kernel is a widely used open-source operating system kernel that serves as the foundation for various Linux distributions. It provides essential functionality for hardware management, process scheduling, memory management, and device drivers. The NFC (Near Field Communication) subsystem within the Linux Kernel enables communication between devices in close proximity, allowing for contactless data exchange. The digital component of the NFC subsystem is responsible for handling digital communication protocols. However, a vulnerability has been identified in the digital_tg_listen_mdaa() function, which can lead to a memory leak.
Vulnerability Detail
The vulnerability in digital_tg_listen_mdaa() within the NFC digital component of the Linux Kernel can result in a memory leak. When this function is invoked, it may allocate memory but fail to deallocate it properly under certain conditions. This can lead to a gradual depletion of available memory resources, potentially causing system instability or denial of service. The vulnerability was introduced in version v3.13 of the Linux Kernel and has been fixed in version v5.10.75.
How To Fix
No fixed version is published for this vulnerability.
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Conclusion
The memory leak vulnerability in the NFC digital component of the Linux Kernel can result in a gradual depletion of available memory resources, potentially leading to system instability or denial of service. It is recommended to update the Linux Kernel to version v5.10.75 or later to address this vulnerability. For further assistance or support in vulnerability remediation, please contact DevNack.com.
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FAQ
The vulnerability can lead to a gradual depletion of available memory resources, potentially causing system instability or denial of service.
You can use Vulert's playground (https://vulert.com/scanner) to check if your Linux Kernel version is within the affected range. Vulert analyzes the package-lock.json file to identify vulnerabilities in open-source software.
No specific workaround has been provided for this vulnerability. It is recommended to update the Linux Kernel to the fixed version.
At the time of this report, no known exploits have been disclosed for this vulnerability. However, it is crucial to apply the recommended fix to mitigate potential risks.
The details regarding remote exploitation have not been provided in the vulnerability report. However, it is advisable to apply the fix as soon as possible to ensure system security.
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