Memory Leak Vulnerability in NFC Digital Driver
Summary
GSD-2021-1001934: NFC: digital: fix possible memory leak in digital_in_send_sdd_req(). Affects Kernel versions >= 2c66daecc4092e6049673c281b2e6f0d5e59a94c, < 88c890b0b9a1fb9fcd01c61ada515e8b636c34f9. No fix is published. How to fix ↓
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Background
The NFC (Near Field Communication) digital driver is a component of the Linux Kernel, which provides support for NFC functionality on compatible devices. NFC enables short-range wireless communication between devices, allowing for convenient data transfer and contactless payments. The digital driver is responsible for handling NFC operations and communication protocols. However, a memory leak vulnerability has been identified in the digital_in_send_sdd_req() function of the driver.
Vulnerability Detail
The memory leak vulnerability in digital_in_send_sdd_req() can lead to the gradual consumption of system memory resources. This occurs when the function fails to release allocated memory properly under certain conditions. An attacker could potentially exploit this vulnerability to exhaust available memory, 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 v4.9.288.
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 v4.9.288 or later. This update includes the commit 88c890b0b9a1fb9fcd01c61ada515e8b636c34f9, which addresses the memory leak issue in digital_in_send_sdd_req(). Users can obtain the updated Kernel from the official Linux Kernel repository: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/
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Workaround
There is no specific workaround mentioned for this vulnerability.
Conclusion
In conclusion, the NFC digital driver in the Linux Kernel is vulnerable to a memory leak issue in the digital_in_send_sdd_req() function. This vulnerability can potentially lead to system instability or denial of service. Users are advised to update their Linux Kernel to version v4.9.288 or later to mitigate this vulnerability. For further support and assistance in vulnerability remediation, please contact DevNack.com.
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FAQ
NFC (Near Field Communication) is a wireless communication technology that enables short-range data transfer and contactless payments between compatible devices.
The digital driver is responsible for handling NFC operations and communication protocols in the Linux Kernel, allowing devices to utilize NFC functionality.
A memory leak vulnerability occurs when a program or system fails to release allocated memory properly, leading to the gradual consumption of memory resources and potential system instability.
The memory leak vulnerability in the NFC digital driver can result in the exhaustion of available system memory, leading to system instability or denial of service.
To fix this vulnerability, it is recommended to update the Linux Kernel to version v4.9.288 or later, which includes the necessary fix for the memory leak issue.
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