Fix crash in smtcfb_write() in video: fbdev: sm712fb
Summary
GSD-2022-1001776: video: fbdev: sm712fb: Fix crash in smtcfb_write(). Affects Kernel versions < eae90015d10f0c9a47fc4adccba4cd79dce664e4. 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 driver allows the operating system to communicate with the graphics hardware and display graphics on the screen. The smtcfb_write() function is responsible for writing data to the framebuffer. However, a vulnerability has been discovered in this function that can lead to a crash in the system.
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 vulnerability can be exploited by an attacker with local access to the system, potentially leading to 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 known workaround for this vulnerability. It is recommended to apply the fix by updating the Linux Kernel to the latest version.
Conclusion
The vulnerability in smtcfb_write() in video: fbdev: sm712fb has the potential to cause a system crash and denial of service (DoS) condition. It is recommended to update the Linux Kernel to version v5.15.33 or later to fix this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
video: fbdev: sm712fb is a driver in the Linux Kernel that provides support for the Silicon Motion SM712 graphics controller. It allows the operating system to communicate with the graphics hardware and display graphics on the screen.
The impact of this vulnerability is a potential denial of service (DoS) condition, as it can lead to a system crash. However, the actual impact and attack plausibility have not been proven yet.
This vulnerability can be exploited by an attacker with local access to the system.
Yes, this vulnerability has been fixed in Linux Kernel version v5.15.33 by commit eae90015d10f0c9a47fc4adccba4cd79dce664e4.
To fix this vulnerability, users should update their Linux Kernel to version v5.15.33 or later.
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