Medium severity5.5NVD Advisory· Published Aug 23, 2022· Updated Jun 17, 2026
CVE-2021-3997
CVE-2021-3997
Description
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
15(expand)+ 2 more
- (no CPE)
- (no CPE)
- cpe:2.3:a:systemd_project:systemd:*:*:*:*:*:*:*:*range: >=240,<250.2
- osv-coords6 versionspkg:rpm/opensuse/systemd&distro=openSUSE%20Tumbleweedpkg:rpm/suse/systemd&distro=SUSE%20Linux%20Enterprise%20Micro%205.1pkg:rpm/suse/systemd&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP3pkg:rpm/opensuse/htmldoc&distro=openSUSE%20Leap%2015.3pkg:rpm/suse/htmldoc&distro=SUSE%20Package%20Hub%2015%20SP3pkg:rpm/opensuse/systemd&distro=openSUSE%20Leap%2015.3
< 249.7-3.1+ 5 more
- (no CPE)range: < 249.7-3.1
- (no CPE)range: < 246.16-7.33.1
- (no CPE)range: < 246.16-7.33.1
- (no CPE)range: < 1.9.12-bp153.2.6.1
- (no CPE)range: < 1.9.12-bp153.2.6.1
- (no CPE)range: < 246.16-7.33.1
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*+ 2 more
- cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*
Patches
Vulnerability mechanics
References
5- bugzilla.redhat.com/show_bug.cginvdIssue TrackingPatchThird Party Advisory
- github.com/systemd/systemd/commit/5b1cf7a9be37e20133c0208005274ce4a5b5c6a1nvdPatchThird Party Advisory
- www.openwall.com/lists/oss-security/2022/01/10/2nvdExploitMailing ListThird Party Advisory
- access.redhat.com/security/cve/CVE-2021-3997nvdIssue TrackingThird Party Advisory
- security.gentoo.org/glsa/202305-15nvd
News mentions
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