Kernel Vulnerability in Linux Affecting Media Graphics Technology

CVE-2026-46216

What is CVE-2026-46216?

A vulnerability in the Linux kernel related to the handling of media graphics technology has been identified. When the media GT is disabled via configfs, the corresponding media_gt variable remains NULL. This condition triggers a kernel pagefault error in the intel_hdcp_gsc_check_status() function as it attempts to evaluate a memory address that is not valid. The vulnerability has been addressed by introducing a NULL check on the media_gt variable, ensuring the system can safely exit the function if media_gt is NULL. Additional changes in the code have been implemented to streamline the NULL checks and improve overall system stability. It's crucial for users and administrators to apply the latest updates to safeguard their systems.

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