CVE-2021-33656 Information

Description

When setting font with malicous data by ioctl cmd PIO_FONTkernel will write memory out of bounds.

Reference

https://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git/tree/releases/5.10.127/vt-drop-old-font-ioctls.patch https://www.openeuler.org/en/security/cve/detail.html?id=CVE-2021-33656&packageName=kernel