Fix crash in smtcfb_read() in video: fbdev: sm712fb
Summary
GSD-2022-1001900: video: fbdev: sm712fb: Fix crash in smtcfb_read(). Affects Kernel versions < 46cdbff26c88fd75dccbf28df1d07cbe18007eac. 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 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 LynxEM+ SM712 graphics controller. This vulnerability affects the smtcfb_read() function in the sm712fb driver, leading to a crash.
Vulnerability Detail
The vulnerability in the smtcfb_read() function of the sm712fb driver can result in a crash. The exact cause and impact of the crash have not been proven yet. However, it is important to note that crashes can potentially lead to denial-of-service (DoS) situations, where an attacker can repeatedly trigger the crash to disrupt the normal operation of the system. The vulnerability has been fixed in Linux Kernel version v5.15.33 by commit 46cdbff26c88fd75dccbf28df1d07cbe18007eac.
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_read() function of the sm712fb driver has the potential to cause crashes, leading to denial-of-service situations. It is crucial to update the Linux Kernel to version v5.15.33 or later to mitigate this vulnerability. For further support on vulnerability remediation, you can reach out to DevNack.com.
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FAQ
The impact of this vulnerability is a potential crash in the sm712fb driver, which can lead to denial-of-service (DoS) situations.
You can check the version of your Linux Kernel and compare it to the fixed version (v5.15.33 or later) to determine if your system is affected. Alternatively, you can use vulnerability monitoring tools like Vulert to scan your system for known vulnerabilities.
Yes, the vulnerability has been fixed in Linux Kernel version v5.15.33 by commit 46cdbff26c88fd75dccbf28df1d07cbe18007eac.
Since there is no specific workaround mentioned for this vulnerability, it is recommended to update the Linux Kernel to the fixed version as soon as possible.
You can refer to the vulnerability details in the Open Source Vulnerability format provided by the Cloud Security Alliance's GSD database. The details include the vulnerability ID, affected package, fix commit, and relevant references.
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