Memory Leak Vulnerability in virtio-blk Package
Summary
GSD-2021-1001446: virtio-blk: Fix memory leak among suspend/resume procedure. Affects Kernel versions < 102d6bc6475ab09bab579c18704e6cf8d898e93c. No fix is published. How to fix ↓
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Background
The virtio-blk package is a component of the Linux Kernel ecosystem. It provides a virtual block device driver for the VirtIO framework, which allows virtual machines to access block devices efficiently. The package enables communication between the host and guest systems, facilitating disk I/O operations. However, a vulnerability has been identified within the suspend/resume procedure of virtio-blk, leading to a memory leak issue.
Vulnerability Detail
The memory leak vulnerability in virtio-blk occurs during the suspend/resume procedure. When suspending or resuming a virtual machine, the driver fails to release allocated memory properly, resulting in a memory leak. This can lead to a gradual depletion of available memory resources, potentially causing system instability or denial of service conditions. The vulnerability has been assigned the ID GSD-2021-1001446 and is fixed in Linux Kernel version v4.9.276 by commit 102d6bc6475ab09bab579c18704e6cf8d898e93c.
How To Fix
No fixed version is published for this vulnerability.
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Conclusion
In conclusion, the memory leak vulnerability in virtio-blk can be mitigated by updating the Linux Kernel to version v4.9.276 or later. This will ensure that the suspend/resume procedure properly releases allocated memory, preventing memory leaks and potential system instability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
virtio-blk is a virtual block device driver for the VirtIO framework in the Linux Kernel. It enables efficient disk I/O operations between host and guest systems in virtual machines.
The memory leak vulnerability in virtio-blk can lead to a gradual depletion of available memory resources, potentially causing system instability or denial of service conditions.
You can use Vulert's playground (https://vulert.com/scanner) to check if your system is affected by this vulnerability. Simply upload your manifest file (e.g., package-lock.json) and Vulert will provide real-time alerts for open-source vulnerabilities.
No specific workaround has been mentioned for this vulnerability. It is recommended to update the Linux Kernel to the fixed version.
You can find more information about the fix for this vulnerability in the Linux Kernel by referring to the commit 102d6bc6475ab09bab579c18704e6cf8d898e93c in the official repository (https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/).
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