CVE-2020-36557: Linux Kernel

Medium severity, CVSS 5.1. EPSS: 0.2% chance of exploitation in the next 30 days.

A race condition in the Linux kernel before 5.6.2 between the VT_DISALLOCATE ioctl and closing/opening of ttys could lead to a use-after-free.

Affected products

• Linux Linux Kernel: before 5.6.2 (fixed in 5.6.2)

Published 2022-07-21. Last modified 2026-06-17.