UBSAN Warning Fix in Linux Kernel for Graphics Driver

CVE-2022-50628

What is CVE-2022-50628?

A vulnerability in the Linux kernel related to the graphics driver 'gud' has been addressed. This issue arose from uninitialized stack variables in the iosys_map structure. As a result, the boolean variable 'is_iomem' could take on invalid values leading to undefined behavior. The resolution involved ensuring that these variables are properly zeroed out before use, thus preventing potential instability and errors in graphics processing. This fix enhances the reliability and security of systems using the affected graphics driver.

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