Fix crash in smtcfb_write() in video: fbdev: sm712fb
Summary
GSD-2022-1002484: video: fbdev: sm712fb: Fix crash in smtcfb_write(). Affects Kernel versions < fb791514acf9070225eed46e1ccbb0aa7aae5da5. No fix is published. How to fix ↓
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Background
The video: fbdev: sm712fb is a component of the Linux Kernel, which is responsible for handling the framebuffer devices. The sm712fb driver specifically supports the Silicon Motion LynxEM+ SM712 graphics controller. This vulnerability affects the smtcfb_write() function within the sm712fb driver.
Vulnerability Detail
The vulnerability in the smtcfb_write() function of the sm712fb driver can lead to a crash. The exact cause and impact of the crash have not been determined, but it has the potential to disrupt the normal operation of the framebuffer device and potentially affect the overall stability of the system. The vulnerability has been fixed in Linux Kernel version v4.9.311 by commit fb791514acf9070225eed46e1ccbb0aa7aae5da5.
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 vulnerability in the smtcfb_write() function of the sm712fb driver has the potential to cause a crash in the framebuffer device. It is recommended to update the Linux Kernel to version v4.9.311 or later to mitigate 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 crash in the sm712fb driver, which can disrupt the normal operation of the framebuffer device and affect system stability.
You can check the version of your Linux Kernel and compare it with the fixed version (v4.9.311 or later) to determine if your system is affected. Additionally, you can use vulnerability scanning tools like Vulert to identify if your system is vulnerable.
There are no known exploits for this vulnerability at the moment. However, it is always recommended to apply security patches promptly to mitigate any potential risks.
While there is no specific workaround mentioned for this vulnerability, it is generally recommended to follow security best practices, such as restricting access to vulnerable systems, implementing network segmentation, and monitoring for any suspicious activity.
You can refer to the official Linux Kernel repository for the commit (fb791514acf9070225eed46e1ccbb0aa7aae5da5) that fixes this vulnerability. Additionally, you can reach out to the Linux Kernel community or consult security advisories from your Linux distribution for more information.
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