Memory Leak Vulnerability in virtio-blk Package
Summary
GSD-2021-1001410: virtio-blk: Fix memory leak among suspend/resume procedure. Affects Kernel versions < 863da837964c80c72e368a4f748c30d25daa1815. 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. This package is widely used in virtualization environments to enable communication between the host and guest systems. However, a vulnerability has been identified in 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 a virtual machine is suspended and then resumed, the virtio-blk 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-2021-1001410 and has not yet been proven to have a significant impact or attack plausibility.
How To Fix
No fixed version is published for this vulnerability.
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Conclusion
In conclusion, the virtio-blk package in the Linux Kernel is vulnerable to a memory leak issue during the suspend/resume procedure. This vulnerability can be fixed by updating the Linux Kernel to version v4.14.240 or later. It is recommended to apply the patch provided in commit 863da837964c80c72e368a4f748c30d25daa1815. For further support on vulnerability remediation, you can 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 communication between virtual machines and block devices.
The memory leak vulnerability in virtio-blk can result in a gradual depletion of available memory resources, potentially leading to 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. Vulert monitors and alerts in real-time for open-source vulnerabilities without requiring access to the code or installation.
No specific workaround has been mentioned for this vulnerability. It is recommended to update the Linux Kernel to the patched version.
You can find more information about this vulnerability in the GSD-2021-1001410 JSON file available in the GSD database (https://github.com/cloudsecurityalliance/gsd-database).
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