The vulnerability of the KD_FONT_OP_COPY function in the fbcon driver of Linux operating systems allows attackers to escalate their privileges or cause service failures.

The vulnerability of the KDFONTOPCOPY function in the fbcon driver of Linux operating system kernels relates to the execution of operations outside the buffer boundaries. Exploiting this vulnerability could allow an attacker to gain unauthorized access to protected information or cause service...

UBUNTU-CVE-2020-28974

A slab-out-of-bounds read in fbcon in the Linux kernel before 5.9.7 could be used by local attackers to read privileged information or potentially crash the kernel, aka CID-3c4e0dff2095. This occurs because KDFONTOPCOPY in drivers/tty/vt/vt.c can be used for manipulations such as font height...