Fix crash in smtcfb_write() in video: fbdev: sm712fb
Summary
GSD-2022-1002418: video: fbdev: sm712fb: Fix crash in smtcfb_write(). Affects Kernel versions < 0ec746674296c94137f074309c26d17e644c0498. No fix is published. How to fix ↓
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Background
The video: fbdev: sm712fb is a driver in the Linux Kernel that 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 in this driver 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 smtcfb_write() can be triggered when writing data to the framebuffer. It is caused by a lack of proper input validation, allowing an attacker to provide malicious input that can lead to a crash. This crash can potentially be exploited to cause a denial of service (DoS) condition. 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 driver 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. It is recommended to update the Linux Kernel to version v4.14.276 or later to fix this vulnerability. For further support on vulnerability remediation, you can contact DevNack.com.
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FAQ
The impact of this vulnerability is a potential denial of service (DoS) condition, as it can lead to a crash in the sm712fb driver.
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 are no known exploits for this vulnerability at the moment. However, it is always recommended to apply the necessary security updates to mitigate any potential risks.
The remote exploitability of this vulnerability has not been determined yet. Further analysis is required to assess the potential remote attack vectors.
For more details about this vulnerability, including the fix commit and references, you can refer to the vulnerability ID GSD-2022-1002418 in the GSD Database at https://github.com/cloudsecurityalliance/gsd-database.
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