Divide-by-zero bug in ark_set_pixclock() in video: fbdev: arkfb
Summary
GSD-2022-1005825: video: fbdev: arkfb: Fix a divide-by-zero bug in ark_set_pixclock(). Affects Kernel versions >= 681e14730c73cc2c71af282c001de6bc71c22f00, < 0288fa799e273b08839037499d704dc7bdc13e9a. No fix is published. How to fix ↓
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Background
The video: fbdev: arkfb package is a component of the Linux Kernel ecosystem. It provides support for the ARK Logic 2000PV video card. The package includes the arkfb driver, which is responsible for managing the framebuffer device for the ARK Logic video card. The ark_set_pixclock() function within the driver is vulnerable to a divide-by-zero bug.
Vulnerability Detail
The divide-by-zero bug in the ark_set_pixclock() function can be triggered when setting the pixel clock for the ARK Logic video card. This vulnerability can be exploited by an attacker to cause a denial-of-service condition or potentially execute arbitrary code with kernel privileges. The bug was introduced in version v2.6.22 of the Linux Kernel and has been fixed in version v5.10.137.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
There is no known workaround for this vulnerability. Users are advised to update their Linux Kernel to the fixed version.
Conclusion
The divide-by-zero bug in the ark_set_pixclock() function of the video: fbdev: arkfb package can lead to a denial-of-service condition or potential execution of arbitrary code with kernel privileges. Users should update their Linux Kernel to version v5.10.137 or later to fix this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
This vulnerability can lead to a denial-of-service condition or potential execution of arbitrary code with kernel privileges.
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 to the playground and it will alert you in real-time if the vulnerability is present.
There is no known exploit for this vulnerability at this time.
This vulnerability requires local access to the system in order to exploit it.
The only mitigation for this vulnerability is to update the Linux Kernel to the fixed version.
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