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CVE-2022-2526

Published: Sep 9, 2022Updated: Nov 21, 2024 Sources: CVE List NVD BDU csafCWE-416
NVD MITRE
9.8CVSSCRITICAL
EPSS Score
1.1%
Top 40.1%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

A use-after-free vulnerability was found in systemd. This issue occurs due to the on_stream_io() function and dns_stream_complete() function in 'resolved-dns-stream.c' not incrementing the reference counting for the DnsStream object. Therefore, other functions and callbacks called can dereference the DNSStream object, causing the use-after-free when the reference is still used later.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-416

Affected Products

systemd-resolvedn/a
systemdsystemd project
On-prem
Operating Systems / linux-distro
active iq unified managernetappHardware Firmware
h300s firmwarenetappHardware Firmware
h500s firmwarenetappHardware Firmware
systemd projectoss-projectOperating Systemsaka systemd
netappcommercialUSHardware Firmware
and 18 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available

MITRE ATT&CK

2 techniques
Initial Access
Privilege Escalation
View detailed technique mapping

References

https://github.com/systemd/systemd/commit/d973d94dec349fb676fdd844f6fe2ada3538f27c
github.com
https://security.netapp.com/advisory/ntap-20221111-0005/
security.netapp.com
https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2025/icsa-25-105-08.json
raw.githubusercontent.com
and 64 more references View all →

Timeline

Published
Sep 9, 2022
Last Updated
Nov 21, 2024

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