A flaw was found in systemd. An uncontrolled recursion in systemd-tmpfiles may lead to a denial of service at boot time when too many nested directories are created in /tmp.
CVE-2021-3997
CVSS base score
5.5 (v3.1)
Severity
MEDIUM
Attack vector
Local
Weakness
CWE-674
Last modified
November 2, 2026
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected products
systemd project systemd
fedoraproject fedora
redhat enterprise linux
References
- access.redhat.com Issue Tracking, Third Party Advisory
- bugzilla.redhat.com Issue Tracking, Patch, Third Party Advisory
- github.com Patch, Third Party Advisory
- security.gentoo.org
- www.openwall.com Exploit, Mailing List, Third Party Advisory
- access.redhat.com Issue Tracking, Third Party Advisory
- bugzilla.redhat.com Issue Tracking, Patch, Third Party Advisory
- github.com Patch, Third Party Advisory
- security.gentoo.org
- www.openwall.com Exploit, Mailing List, Third Party Advisory