CVE-2021-33910

Advisory lineage Upstream: 0 Downstream: 25
Modified
Published: 20 Jul 2021, 18:13
Last modified:09 Jun 2025, 15:44

Vulnerability Summary

Overall Risk (default)
medium
32/100
CVSS Score
5.5 MEDIUM
v3.1 (cve.org)
EPSS Score
0.05% LOW
0% probability -0.03%
KEV
Not listed
Ransomware
No reports
Public exploits
2 found
Dark Web
Not detected

Timeline

20 Jul 2021, 18:13
Published
Vulnerability first disclosed
09 Jun 2025, 15:44
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v3.1•MEDIUM•Score: 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
  • v2.0•MEDIUM•Score: 4.9AV:L/AC:L/Au:N/C:N/I:N/A:C

EPSS Trends

Current EPSS score: 0.05%• Percentile: 17%

Techniques & Countermeasures

  • CWE-770•Allocation of Resources Without Limits or Throttling

    The product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.

Affected Systems

  • debian•debian_linux

    10.0

  • fedoraproject•fedora

    33 | 34

  • netapp•hci_management_node

    na

  • netapp•solidfire

    na

  • systemd_project•systemd

    < 246.15 | ≥ 247, < 247.8 | ≥ 248, < 248.5 | ≥ 249, < 249.1

References (17)