Vulnerability in Kernel: video: fbdev: clcdfb: Fix refcount leak in clcdfb_of_vram_setup
Summary
GSD-2022-1002685: video: fbdev: clcdfb: Fix refcount leak in clcdfb_of_vram_setup. Affects Kernel versions >= d10715be03bd8bad59ddc50236cb140c3bd73c7b, < 38d245cebf545338a6bc1c7762023de3fbecd7b7. No fix is published. How to fix ↓
Check if this vulnerability affects your application
Upload a manifest or SBOM and we'll show whether you're affected, plus every other risky package in the same scan.
No signup required · Results in about 60 seconds
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 for various devices, including video display. One of the video display drivers in the Kernel is fbdev, which supports frame buffer devices. The clcdfb driver is a specific implementation of fbdev for certain display controllers. It allows applications to interact with the display hardware through a frame buffer interface. However, a vulnerability has been identified in the clcdfb driver that can lead to a refcount leak in the clcdfb_of_vram_setup function.
Vulnerability Detail
The vulnerability in the clcdfb_of_vram_setup function of the clcdfb driver allows for a refcount leak. This means that the reference count for a specific resource is not properly managed, leading to a potential resource leak. An attacker could potentially exploit this vulnerability to exhaust system resources, resulting in a denial-of-service condition. The vulnerability was introduced in version v3.17 of the Linux Kernel and has been fixed in version v5.18.3.
How To Fix
No fixed version is published for this vulnerability.
Tip — Not sure whether your app is affected? Vulert can check the versions your app actually runs. Scan free →
Workaround
There is no specific workaround mentioned for this vulnerability. The recommended approach is to apply the fix by updating the Linux Kernel to the latest version.
Conclusion
The vulnerability in the clcdfb driver of the Linux Kernel can result in a refcount leak, potentially leading to a denial-of-service condition. It is crucial to update the Kernel to version v5.18.3 or later to mitigate this vulnerability. For further support on vulnerability remediation, you can reach out to DevNack.com.
See every vulnerability recorded for Kernel →
FAQ
The vulnerability can potentially lead to a denial-of-service condition by exhausting system resources.
You can use the Vulert Playground at Vulert Scanner to check if your system is affected by this vulnerability. Simply upload your package-lock.json file and Vulert will analyze it for any open-source vulnerabilities, including this one.
There is no known exploit for this vulnerability at the moment. However, it is still recommended to apply the fix to ensure system security.
It is generally not recommended to manually patch the vulnerability without updating the entire Kernel. Updating the Kernel to the latest version ensures that all necessary fixes and security enhancements are applied.
You can refer to the vulnerability details in the GSD database at https://github.com/cloudsecurityalliance/gsd-database/blob/main/2022/1002xxx/GSD-2022-1002685.json for more information.
Related vulnerabilities
Recent vulnerabilities recorded for Kernel.
