CVE catalog
CVE-2021-3997
systemd: CVE-2021-3997
- Severity
- Medium · CVSS 5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 1.72% · Oct 25, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | systemd | sid | 262.1-1 | fixed |
| Debian | systemd | forky | 262-1 | fixed |
| Debian | systemd | trixie | 257.13-1~deb13u1 | fixed |
| Debian | systemd | bookworm | 252.39-1~deb12u2 | fixed |
| Debian | systemd | bookworm-security | 252.38-1~deb12u1 | fixed |
| Cpe | systemd | Not reported | 250.2 | fixed |
| Cpe | fedora | Not reported | Not reported | unknown |
| Cpe | enterprise_linux | Not reported | Not reported | unknown |
| Ubuntu | systemd | 20.04 | 242-7ubuntu3 | vulnerable |
| Ubuntu | systemd | 20.04 | 243-2ubuntu1 | vulnerable |
| Ubuntu | systemd | 20.04 | 243-3ubuntu1 | vulnerable |
| Ubuntu | systemd | 20.04 | 244-3ubuntu1 | vulnerable |
| Ubuntu | systemd | 20.04 | 244.1-0ubuntu2 | vulnerable |
| Ubuntu | systemd | 20.04 | 244.1-0ubuntu3 | vulnerable |
| Ubuntu | systemd | 20.04 | 244.2-1ubuntu1 | vulnerable |
| Ubuntu | systemd | 20.04 | 244.3-1ubuntu1 | vulnerable |
| Ubuntu | systemd | 20.04 | 245.2-1ubuntu1 | vulnerable |
| Ubuntu | systemd | 20.04 | 245.2-1ubuntu2 | vulnerable |
| Ubuntu | systemd | 20.04 | 245.4-2ubuntu1 | vulnerable |
| Ubuntu | systemd | 20.04 | 245.4-4ubuntu1 | vulnerable |
| Ubuntu | systemd | 20.04 | 245.4-4ubuntu3 | vulnerable |
| Ubuntu | systemd | 20.04 | 245.4-4ubuntu3.1 | vulnerable |
| Ubuntu | systemd | 20.04 | 245.4-4ubuntu3.2 | vulnerable |
| Ubuntu | systemd | 20.04 | 245.4-4ubuntu3.3 | vulnerable |
| Ubuntu | systemd | 20.04 | 245.4-4ubuntu3.4 | vulnerable |
| Ubuntu | systemd | 20.04 | 245.4-4ubuntu3.5 | vulnerable |
| Ubuntu | systemd | 20.04 | 245.4-4ubuntu3.6 | vulnerable |
| Ubuntu | systemd | 20.04 | 245.4-4ubuntu3.7 | vulnerable |
| Ubuntu | systemd | 20.04 | 245.4-4ubuntu3.10 | vulnerable |
| Ubuntu | systemd | 20.04 | 245.4-4ubuntu3.11 | vulnerable |
| Ubuntu | systemd | 20.04 | 245.4-4ubuntu3.13 | vulnerable |
| Ubuntu | systemd | 20.04 | 245.4-4ubuntu3.14 | vulnerable |
| Ubuntu | systemd | 20.04 | 245.4-4ubuntu3.15 | fixed |
| Opensuse | systemd | tumbleweed | 249.7-3.1 | fixed |
| Opensuse | systemd | leap 15.3 | 246.16-150300.7.39.1 | fixed |
| Suse | systemd | linux enterprise module for basesystem 15 sp3 | 246.16-150300.7.39.1 | fixed |
| Suse | systemd | linux enterprise micro 5.1 | 246.16-150300.7.39.1 | fixed |
| Suse | systemd | linux enterprise module for basesystem 15 sp3 | 246.16-7.33.1 | fixed |
| Suse | systemd | linux enterprise micro 5.1 | 246.16-7.33.1 | fixed |
| Suse | htmldoc | package hub 15 sp3 | 1.9.12-bp153.2.6.1 | fixed |
| Opensuse | htmldoc | leap 15.3 | 1.9.12-bp153.2.6.1 | fixed |
| Opensuse | systemd | leap 15.3 | 246.16-7.33.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | systemd | source | sid | 250.2-1 | not yet assigned | Not reported | [1003467] |
| Debian | systemd | source | forky | 250.2-1 | not yet assigned | Not reported | [1003467] |
| Debian | systemd | source | trixie | 250.2-1 | not yet assigned | Not reported | [1003467] |
| Debian | systemd | source | bookworm | 250.2-1 | not yet assigned | Not reported | [1003467] |
| Cpe | systemd | cpe | Not reported | 250.2 | Not reported | NVD-CVE-2021-3997 | Not reported |
| Ubuntu | systemd | deb | 20.04 | 245.4-4ubuntu3.15 | Not reported | USN-5226-1 | Not reported |
| Opensuse | systemd | rpm | tumbleweed | 249.7-3.1 | Not reported | OPENSUSE-SU-2024:11731-1 | Not reported |
| Opensuse | systemd | rpm | leap 15.3 | 246.16-150300.7.39.1 | Not reported | OPENSUSE-SU-2022:0539-1 | Not reported |
| Suse | systemd | rpm | linux enterprise module for basesystem 15 sp3 | 246.16-150300.7.39.1 | Not reported | SUSE-SU-2022:0539-1 | Not reported |
| Suse | systemd | rpm | linux enterprise micro 5.1 | 246.16-150300.7.39.1 | Not reported | SUSE-SU-2022:0539-1 | Not reported |
| Suse | systemd | rpm | linux enterprise module for basesystem 15 sp3 | 246.16-7.33.1 | Not reported | SUSE-SU-2022:0043-1 | Not reported |
| Suse | systemd | rpm | linux enterprise micro 5.1 | 246.16-7.33.1 | Not reported | SUSE-SU-2022:0043-1 | Not reported |
| Suse | htmldoc | rpm | package hub 15 sp3 | 1.9.12-bp153.2.6.1 | Not reported | OPENSUSE-SU-2022:0043-1 | Not reported |
| Opensuse | htmldoc | rpm | leap 15.3 | 1.9.12-bp153.2.6.1 | Not reported | OPENSUSE-SU-2022:0043-1 | Not reported |
| Opensuse | systemd | rpm | leap 15.3 | 246.16-7.33.1 | Not reported | OPENSUSE-SU-2022:0043-1 | Not reported |
OpenFactory catalog packages
[openSUSE Tumbleweed]
- [libsystemd0]Unknown
Source package: [systemd]
Details (1)
261.2-1.1· x86_64 · tumbleweedUnknown · Fixed:
249.7-3.1Version impact unknown
dsa · systemd · opensuse · tumbleweed
- [libsystemd0-32bit]Unknown
Source package: [systemd]
Details (1)
261.2-1.1· x86_64 · tumbleweedUnknown · Fixed:
249.7-3.1Version impact unknown
dsa · systemd · opensuse · tumbleweed
- [libudev1]Unknown
Source package: [systemd]
Details (1)
261.2-1.1· x86_64 · tumbleweedUnknown · Fixed:
249.7-3.1Version impact unknown
dsa · systemd · opensuse · tumbleweed
- [libudev1-32bit]Unknown
Source package: [systemd]
Details (1)
261.2-1.1· x86_64 · tumbleweedUnknown · Fixed:
249.7-3.1Version impact unknown
dsa · systemd · opensuse · tumbleweed
- [systemd-32bit]Unknown
Source package: [systemd]
Details (1)
261.2-1.1· x86_64 · tumbleweedUnknown · Fixed:
249.7-3.1Version impact unknown
dsa · systemd · opensuse · tumbleweed
- [systemd-boot]Unknown
Source package: [systemd]
Details (1)
261.2-1.1· x86_64 · tumbleweedUnknown · Fixed:
249.7-3.1Version impact unknown
dsa · systemd · opensuse · tumbleweed
- [systemd-container]Unknown
Source package: [systemd]
Details (1)
261.2-1.1· x86_64 · tumbleweedUnknown · Fixed:
249.7-3.1Version impact unknown
dsa · systemd · opensuse · tumbleweed
- [systemd-devel]Unknown
Source package: [systemd]
Details (1)
261.2-1.1· x86_64 · tumbleweedUnknown · Fixed:
249.7-3.1Version impact unknown
dsa · systemd · opensuse · tumbleweed
- [systemd-devel-32bit]Unknown
Source package: [systemd]
Details (1)
261.2-1.1· x86_64 · tumbleweedUnknown · Fixed:
249.7-3.1Version impact unknown
dsa · systemd · opensuse · tumbleweed
- [systemd-doc]Unknown
Source package: [systemd]
Details (1)
261.2-1.1· noarch · tumbleweedUnknown · Fixed:
249.7-3.1Version impact unknown
dsa · systemd · opensuse · tumbleweed
- [systemd-experimental]Unknown
Source package: [systemd]
Details (1)
261.2-1.1· x86_64 · tumbleweedUnknown · Fixed:
249.7-3.1Version impact unknown
dsa · systemd · opensuse · tumbleweed
- [systemd-homed]Unknown
Source package: [systemd]
Details (1)
261.2-1.1· x86_64 · tumbleweedUnknown · Fixed:
249.7-3.1Version impact unknown
dsa · systemd · opensuse · tumbleweed
- [systemd-journal-remote]Unknown
Source package: [systemd]
Details (1)
261.2-1.1· x86_64 · tumbleweedUnknown · Fixed:
249.7-3.1Version impact unknown
dsa · systemd · opensuse · tumbleweed
- [systemd-lang]Unknown
Source package: [systemd]
Details (1)
261.2-1.1· noarch · tumbleweedUnknown · Fixed:
249.7-3.1Version impact unknown
dsa · systemd · opensuse · tumbleweed
- [systemd-networkd]Unknown
Source package: [systemd]
Details (1)
261.2-1.1· x86_64 · tumbleweedUnknown · Fixed:
249.7-3.1Version impact unknown
dsa · systemd · opensuse · tumbleweed
- [systemd-portable]Unknown
Source package: [systemd]
Details (1)
261.2-1.1· x86_64 · tumbleweedUnknown · Fixed:
249.7-3.1Version impact unknown
dsa · systemd · opensuse · tumbleweed
- [systemd-resolved]Unknown
Source package: [systemd]
Details (1)
261.2-1.1· x86_64 · tumbleweedUnknown · Fixed:
249.7-3.1Version impact unknown
dsa · systemd · opensuse · tumbleweed
- [systemd-testsuite]Unknown
Source package: [systemd]
Details (1)
261.2-1.1· x86_64 · tumbleweedUnknown · Fixed:
249.7-3.1Version impact unknown
dsa · systemd · opensuse · tumbleweed
- [systemd-ukify]Unknown
Source package: [systemd]
Details (1)
261.2-1.1· noarch · tumbleweedUnknown · Fixed:
249.7-3.1Version impact unknown
dsa · systemd · opensuse · tumbleweed
- [udev]Unknown
Source package: [systemd]
Details (1)
261.2-1.1· x86_64 · tumbleweedUnknown · Fixed:
249.7-3.1Version impact unknown
dsa · systemd · opensuse · tumbleweed
Observed:
References
- [https://cert-portal.siemens.com/productcert/csaf/ssa-398330.json]
- [https://ftp.suse.com/pub/projects/security/csaf/suse-su-2022_0043-1.json]
- [https://nvd.nist.gov/vuln/detail/CVE-2021-3997]
- [https://osv.dev/vulnerability/SUSE-SU-2022:0043-1]
- [https://osv.dev/vulnerability/SUSE-SU-2022:0539-1]
- [https://osv.dev/vulnerability/USN-5226-1]
- [https://osv.dev/vulnerability/openSUSE-SU-2022:0043-1]
- [https://osv.dev/vulnerability/openSUSE-SU-2022:0539-1]
- [https://osv.dev/vulnerability/openSUSE-SU-2024:11731-1]
- [https://security-tracker.debian.org/tracker/CVE-2021-3997]
- [https://wid.cert-bund.de/.well-known/csaf/white/2022/wid-sec-w-2022-2277.json]
[CERT-Bund public advisories] · [CISA cybersecurity advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [SUSE security advisories and VEX]