NFC: digital: Fix Possible Memory Leak in digital_tg_listen_mdaa()

Kernel Updated 02 Oct 2025

Summary

14/11/2021

Disclosed on

N/A

Severity

No i

Fix available

Unrated

Severity

Not published

CVSS Score

GSD-2021-1001954: 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 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 digital mode. However, a vulnerability has been identified in this function that could lead to a memory leak.

Vulnerability Detail

The vulnerability in digital_tg_listen_mdaa() can result in a memory leak. This means that memory resources allocated during the execution of the function may not be properly freed, leading to a gradual depletion of available memory. If this vulnerability is exploited repeatedly, it could cause the system to become unresponsive or crash due to insufficient memory. The impact and attack plausibility of this vulnerability have not been proven yet.

How To Fix

No fixed version is published for this vulnerability.

To fix this vulnerability, it is recommended to update the Linux Kernel to version v4.14.252 or later. The fix for this issue was implemented in commit b7b023e6ff567e991c31cd425b0e1d16779c938b. Updating to the latest version of the Kernel ensures that the vulnerable code is replaced with the patched version.

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Workaround

There is no specific workaround mentioned for this vulnerability.

Conclusion

The vulnerability in digital_tg_listen_mdaa() can result in a memory leak, potentially leading to system instability or crashes. It is recommended to update the Linux Kernel to the latest version to fix this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.

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