Fix crash in smtcfb_write() in video: fbdev: sm712fb
Summary
GSD-2022-1002332: video: fbdev: sm712fb: Fix crash in smtcfb_write(). Affects Kernel versions < 1aea36a62f0a0ad67eccc945bac0bd6422ef720f. No fix is published. How to fix ↓
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Background
The video: fbdev: sm712fb package is a component of the Linux Kernel ecosystem. It provides support for the Silicon Motion SM712 graphics controller. This controller is commonly used in embedded systems and provides framebuffer functionality. The smtcfb_write() function within this package is responsible for writing data to the framebuffer. However, a vulnerability has been discovered in this function that can lead to a crash.
Vulnerability Detail
The vulnerability in the smtcfb_write() function can be exploited by an attacker to cause a crash in the system. This crash can potentially lead to a denial of service (DoS) condition, rendering the affected system inoperable. The vulnerability originates from a flaw in the implementation of the function, which can be triggered by providing malicious input. The impact and attack plausibility of this vulnerability have not been proven yet.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
There is no specific workaround mentioned for this vulnerability.
Conclusion
The video: fbdev: sm712fb package in the Linux Kernel is vulnerable to a crash in the smtcfb_write() function. This vulnerability can potentially lead to a denial of service (DoS) condition. Users should update their Linux Kernel to version v4.19.238 or later to fix the vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The vulnerability can lead to a crash in the system, potentially causing a denial of service (DoS) condition.
You can use the Vulert Playground (https://vulert.com/scanner) to check if your system is affected by this vulnerability. Simply upload your package-lock.json file and the playground will provide real-time alerts for open-source vulnerabilities.
No, the impact and attack plausibility of this vulnerability have not been proven yet.
The recommended mitigation is to update the Linux Kernel to version v4.19.238 or later, which includes the fix for this vulnerability.
The details regarding remote exploitation have not been provided. It is recommended to update the Linux Kernel as a precautionary measure.
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