Memory Leak in zr364xx_start_readpipe in Kernel
Summary
GSD-2021-1001485: media: zr364xx: fix memory leak in zr364xx_start_readpipe. Affects Kernel versions >= ccbf035ae5de4c535160fc99f73feb44cc55b534, < c57b2bd3247925e253729dce283d6bf6abc9339d. No fix is published. How to fix ↓
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Background
The Kernel is a fundamental component of the Linux operating system that manages system resources and provides an interface for software to interact with the hardware. It is responsible for tasks such as process management, memory management, and device drivers. The zr364xx driver is used for controlling certain webcams. However, a memory leak vulnerability has been identified in the zr364xx_start_readpipe function, which could lead to resource exhaustion and potential denial-of-service attacks.
Vulnerability Detail
The zr364xx_start_readpipe function in the zr364xx driver in the Kernel suffers from a memory leak vulnerability. This vulnerability allows an attacker to repeatedly open and close a specific pipe, causing memory to be allocated but not properly deallocated. Over time, this can lead to resource exhaustion and potentially result in a denial-of-service condition. The vulnerability was introduced in version v2.6.32 of the Kernel and has been fixed in version v4.4.276.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
There is no known workaround for this vulnerability. It is recommended to apply the official fix by updating the Kernel to the latest version.
Conclusion
The memory leak vulnerability in the zr364xx_start_readpipe function of the Kernel can lead to resource exhaustion and potential denial-of-service attacks. It is crucial to update the Kernel to version v4.4.276 or later to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
This vulnerability can lead to resource exhaustion and potential denial-of-service attacks. An attacker can exploit the memory leak in the zr364xx_start_readpipe function to consume system resources, causing performance degradation or system unresponsiveness.
You can use the Vulert Playground at Vulert Scanner to check if your system is affected by this vulnerability. The Vulert Playground allows you to analyze your manifest file, such as package-lock.json, without requiring access to the code or installation.
At the time of this report, there is no known public exploit for this vulnerability. However, it is important to apply the fix as soon as possible to mitigate the risk of potential attacks.
Yes, this vulnerability can be exploited remotely. An attacker can send specially crafted requests to the affected system, triggering the memory leak in the zr364xx_start_readpipe function and potentially causing resource exhaustion.
The only effective mitigation for this vulnerability is to update the Kernel to version v4.4.276 or later. Applying the official fix will address the memory leak issue and prevent potential exploitation.
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