Medium severity5.5NVD Advisory· Published Jul 20, 2021· Updated Jun 17, 2026
CVE-2021-33910
CVE-2021-33910
Description
basic/unit-name.c in systemd prior to 246.15, 247.8, 248.5, and 249.1 has a Memory Allocation with an Excessive Size Value (involving strdupa and alloca for a pathname controlled by a local attacker) that results in an operating system crash.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
28- systemd/systemddescription
- Range: <246.15, <247.8, <248.5, <249.1
- osv-coords26 versionspkg:apk/chainguard/py3.10-systemdpkg:apk/chainguard/py3.11-systemdpkg:apk/chainguard/py3.12-systemdpkg:apk/chainguard/py3.13-systemdpkg:apk/chainguard/py3-supported-systemdpkg:apk/chainguard/py3-systemdpkg:rpm/opensuse/systemd&distro=openSUSE%20Leap%2015.2pkg:rpm/opensuse/systemd&distro=openSUSE%20Leap%2015.3pkg:rpm/opensuse/systemd&distro=openSUSE%20Tumbleweedpkg:rpm/opensuse/systemd-mini&distro=openSUSE%20Leap%2015.2pkg:rpm/suse/systemd&distro=HPE%20Helion%20OpenStack%208pkg:rpm/suse/systemd&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP2pkg:rpm/suse/systemd&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP3pkg:rpm/suse/systemd&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-BCLpkg:rpm/suse/systemd&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-BCLpkg:rpm/suse/systemd&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-LTSSpkg:rpm/suse/systemd&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP4-LTSSpkg:rpm/suse/systemd&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg:rpm/suse/systemd&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP3pkg:rpm/suse/systemd&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP4pkg:rpm/suse/systemd&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5pkg:rpm/suse/systemd&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP5pkg:rpm/suse/systemd&distro=SUSE%20OpenStack%20Cloud%208pkg:rpm/suse/systemd&distro=SUSE%20OpenStack%20Cloud%209pkg:rpm/suse/systemd&distro=SUSE%20OpenStack%20Cloud%20Crowbar%208pkg:rpm/suse/systemd&distro=SUSE%20OpenStack%20Cloud%20Crowbar%209
< 0+ 25 more
- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: < 234-lp152.31.31.1
- (no CPE)range: < 234-24.90.1
- (no CPE)range: < 249.4-2.2
- (no CPE)range: < 234-lp152.31.31.1
- (no CPE)range: < 228-150.98.1
- (no CPE)range: < 234-24.90.1
- (no CPE)range: < 246.13-7.8.1
- (no CPE)range: < 228-150.98.1
- (no CPE)range: < 228-150.98.1
- (no CPE)range: < 228-150.98.1
- (no CPE)range: < 228-150.98.1
- (no CPE)range: < 228-157.30.1
- (no CPE)range: < 228-150.98.1
- (no CPE)range: < 228-150.98.1
- (no CPE)range: < 228-157.30.1
- (no CPE)range: < 228-157.30.1
- (no CPE)range: < 228-150.98.1
- (no CPE)range: < 228-150.98.1
- (no CPE)range: < 228-150.98.1
- (no CPE)range: < 228-150.98.1
Patches
Vulnerability mechanics
References
17- www.openwall.com/lists/oss-security/2021/08/04/2nvdMailing ListPatchThird Party Advisory
- www.openwall.com/lists/oss-security/2021/08/17/3nvdMailing ListPatchThird Party Advisory
- www.openwall.com/lists/oss-security/2021/09/07/3nvdMailing ListPatchThird Party Advisory
- github.com/systemd/systemd-stable/commit/4a1c5f34bd3e1daed4490e9d97918e504d19733bnvdPatchThird Party Advisory
- github.com/systemd/systemd-stable/commit/764b74113e36ac5219a4b82a05f311b5a92136cenvdPatchThird Party Advisory
- github.com/systemd/systemd-stable/commit/b00674347337b7531c92fdb65590ab253bb57538nvdPatchThird Party Advisory
- github.com/systemd/systemd-stable/commit/cfd14c65374027b34dbbc4f0551456c5dc2d1f61nvdPatchThird Party Advisory
- github.com/systemd/systemd/commit/b34a4f0e6729de292cb3b0c03c1d48f246ad896bnvdPatchThird Party Advisory
- github.com/systemd/systemd/pull/20256/commits/441e0115646d54f080e5c3bb0ba477c892861ab9nvdPatchThird Party Advisory
- packetstormsecurity.com/files/163621/Sequoia-A-Deep-Root-In-Linuxs-Filesystem-Layer.htmlnvdExploitThird Party AdvisoryVDB Entry
- www.openwall.com/lists/oss-security/2021/07/20/2nvdExploitMailing ListThird Party Advisory
- security.gentoo.org/glsa/202107-48nvdThird Party Advisory
- security.netapp.com/advisory/ntap-20211104-0008/nvdThird Party Advisory
- www.debian.org/security/2021/dsa-4942nvdThird Party Advisory
- cert-portal.siemens.com/productcert/pdf/ssa-222547.pdfnvd
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2LSDMHAKI4LGFOCSPXNVVSEWQFAVFWR7/nvd
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/42TMJVNYRY65B4QCJICBYOEIVZV3KUYI/nvd
News mentions
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