Fix crash in smtcfb_write() in video: fbdev: sm712fb
Summary
GSD-2022-1001131: video: fbdev: sm712fb: Fix crash in smtcfb_write(). Affects Kernel versions < 809b8cde86320698661eec677222bc5c5df76176. No fix is published. How to fix ↓
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Background
The video: fbdev: sm712fb package is a component of the Linux Kernel, which is responsible for managing frame buffer devices. It provides an interface for applications to access and manipulate the video memory directly. The sm712fb driver specifically supports the Silicon Motion SM712 graphics controller. This vulnerability affects versions of the Linux Kernel prior to v5.17.2.
Vulnerability Detail
The vulnerability in video: fbdev: sm712fb is related to a crash in the smtcfb_write() function. This function is responsible for writing data to the frame buffer. Due to a coding error, an attacker can trigger a crash by providing specially crafted input to the smtcfb_write() function. The impact of this vulnerability is a denial of service, as it causes the system to crash. It is important to note that the actual attack plausibility and impact 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
In conclusion, the video: fbdev: sm712fb package in the Linux Kernel is vulnerable to a crash in the smtcfb_write() function. This vulnerability can be fixed by updating the kernel to version v5.17.2 or later. There are no known exploits for this vulnerability, and the impact is limited to a denial of service. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The impact of this vulnerability is a denial of service, as it causes the system to crash.
No, there is no known exploit for this vulnerability at the moment.
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 it will analyze and alert you in real-time.
The recommended mitigation is to update the Linux Kernel to version v5.17.2 or later.
You can find more information about this vulnerability in the GSD-2022-1001131 JSON file available in the GSD database (https://github.com/cloudsecurityalliance/gsd-database).
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