CVE-2021-33910

MEDIUM

Systemd < 246.15 - Resource Allocation Without Limits

Title source: rule
STIX 2.1

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.

References (17)

Core 17
Core References
Exploit, Mailing List, Third Party Advisory x_refsource_misc
https://www.openwall.com/lists/oss-security/2021/07/20/2
Third Party Advisory vendor-advisory x_refsource_gentoo
https://security.gentoo.org/glsa/202107-48
Third Party Advisory vendor-advisory x_refsource_debian
https://www.debian.org/security/2021/dsa-4942
Mailing List, Patch, Third Party Advisory mailing-list x_refsource_mlist
http://www.openwall.com/lists/oss-security/2021/08/04/2
Mailing List, Patch, Third Party Advisory mailing-list x_refsource_mlist
http://www.openwall.com/lists/oss-security/2021/08/17/3
Mailing List, Patch, Third Party Advisory mailing-list x_refsource_mlist
http://www.openwall.com/lists/oss-security/2021/09/07/3
Third Party Advisory x_refsource_confirm
https://security.netapp.com/advisory/ntap-20211104-0008/

Scores

CVSS v3 5.5
EPSS 0.0005
EPSS Percentile 16.5%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-770
Status published
Products (6)
debian/debian_linux 10.0
fedoraproject/fedora 33
fedoraproject/fedora 34
netapp/hci_management_node
netapp/solidfire
systemd_project/systemd < 246.15
Published Jul 20, 2021
Tracked Since Feb 18, 2026