CVE-2020-8428: Linux Kernel

High severity, CVSS 7.1. EPSS: 0.7% chance of exploitation in the next 30 days.

fs/namei.c in the Linux kernel before 5.5 has a may_create_in_sticky use-after-free, which allows local users to cause a denial of service (OOPS) or possibly obtain sensitive information from kernel memory, aka CID-d0cb50185ae9. One attack vector may be an open system call for a UNIX domain socket, if the socket is being moved to a new parent directory and its old parent directory is being removed.

Affected products

• Linux Linux Kernel: from 4.19, before 5.5 (fixed in 5.5)

Published 2020-01-29. Last modified 2026-06-17.