Memory Leak in Linux Kernel nvidiafb Driver

Executive Summary

This vulnerability is a memory leak in the Linux kernel's nvidiafb driver. When probing the nvidiafb device, memory allocated for the modelist in nvidia_set_fbinfo() is not properly freed if an error occurs later in the process. The fix involves calling fb_destroy_modelist() to release this memory.

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Detection Guidance

This vulnerability is specific to the Linux kernel's nvidiafb driver and involves a memory leak in nvidiafb_probe(). Detection requires checking for kernel logs or memory usage patterns related to the nvidiafb module. Commands like dmesg | grep nvidiafb or monitoring memory usage with tools like top or ps may help identify unusual behavior.

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Impact Analysis

The memory leak could lead to gradual system resource exhaustion. Over time, this may cause performance degradation, application crashes, or system instability due to unavailable memory. It primarily affects systems using NVIDIA framebuffer devices.

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Compliance Impact

This vulnerability does not directly affect compliance with standards like GDPR or HIPAA as it is a memory leak in the Linux kernel's nvidiafb driver. Memory leaks are primarily performance and stability issues rather than direct privacy or security risks.

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Mitigation Strategies

Update the Linux kernel to a version that includes the fix for this vulnerability. If updating is not immediately possible, consider disabling the nvidiafb module if it is not required. Monitor system logs for memory leaks or crashes related to the nvidiafb driver.

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