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CVE-2023-38409

Description

An issue was discovered in set_con2fb_map in drivers/video/fbdev/core/fbcon.c in the Linux kernel before 6.2.12. Because an assignment occurs only for the first vc, the fbcon_registered_fb and fbcon_display arrays can be desynchronized in fbcon_mode_deleted (the con2fb_map points at the old fb_info).

POC

Reference

- https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.2.12

Github

- https://github.com/ARPSyndicate/cve-scores