Memory Leak in dvb_media_device_free() in Kernel
Summary
GSD-2021-1000137: media: dvbdev: Fix memory leak in dvb_media_device_free(). Affects Kernel versions >= 0230d60e4661d9ced6fb0b9a30f182ebdafbba7a, < 43263fd43083e412311fa764cd04a727b0c6a749. No fix is published. How to fix ↓
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Background
The Kernel is a crucial component of the Linux operating system, responsible for managing system resources and facilitating communication between hardware and software. It provides essential functionalities and services to ensure the proper functioning of the system. One of the features supported by the Kernel is DVB (Digital Video Broadcasting), which enables the reception and decoding of digital television signals. The dvbdev module in the Kernel handles DVB devices and provides an interface for applications to interact with them. However, a memory leak vulnerability has been identified in the dvb_media_device_free() function, which can lead to resource exhaustion and potential system instability.
Vulnerability Detail
The vulnerability arises from a memory leak in the dvb_media_device_free() function within the dvbdev module of the Kernel. When a DVB media device is freed, the function fails to release allocated memory, resulting in a gradual accumulation of unreleased memory over time. This can lead to resource exhaustion, impacting system performance and stability. An attacker with local access to the affected system could potentially exploit this vulnerability to cause a denial-of-service condition or facilitate further attacks by depleting system resources.
How To Fix
No fixed version is published for this vulnerability.
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Conclusion
The memory leak vulnerability in dvb_media_device_free() within the Kernel can lead to resource exhaustion and potential system instability. It is recommended to update the Linux Kernel to version v5.10.36 or later to mitigate this vulnerability. For further support and assistance in vulnerability remediation, please contact DevNack.com.
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FAQ
The vulnerability can lead to resource exhaustion and potential system instability. It may result in degraded system performance, denial-of-service conditions, or facilitate further attacks by depleting system resources.
Any system running the Linux Kernel version v4.5 to v5.10.35, with the dvbdev module enabled, is potentially affected by this vulnerability.
No, this vulnerability requires local access to the affected system to exploit.
There are no known instances of this vulnerability being exploited in the wild at the time of this report.
No, a direct fix is available by updating the Linux Kernel to version v5.10.36 or later.
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