linux is vulnerable to use after free. An attacker is able to exploit the vulnerability via an I/O request at a certain point during device setup.
www.openwall.com/lists/oss-security/2021/02/01/1
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b98e762e3d71e893b221f871825dc64694cfb258
git.launchpad.net/ubuntu-cve-tracker/tree/active/CVE-2021-3348
lists.debian.org/debian-lts-announce/2021/03/msg00035.html
www.openwall.com/lists/oss-security/2021/01/28/3