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CVE-2026-68742

Sssd: sssd: nss responder out-of-bounds read via unchecked addrlen in gethostbyaddr

Published: Aug 3, 2026Updated: Aug 31, 2026 Sources: CVE List NVDCWE-125
5.5MEDIUM
NVD MITRE
EPSS Score
0.1%
Top 99.4%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

Description

A flaw was found in SSSD. The sss_nss_protocol_parse_addr() function in the NSS responder does not validate the addrlen field against the remaining packet body size. A local attacker can exploit this via a crafted GETHOSTBYADDR request to the NSS responder socket, causing an out-of-bounds read and process crash, resulting in a denial of service.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:LAC:LPR:LUI:NS:UC:NI:NA:H
Exploitability
AV:LAttack Vector
Local
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
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Weaknesses

CWE-125

Affected Products

Red Hat
commercial·USaka redhat
openshift container platformOn-prem
Operating Systems / linux-distro
Red Hat Enterprise Linux 10On-premOS
Operating Systems / linux-distro
Red Hat OpenShift Container Platform 4SaaSSaaS Service
Cloud & SaaS / container-orchestration
fedoraproject
oss-project·USaka fedora project
sssdOn-prem
Operating Systems / linux-distro
and 5 more affected products View all →

Exploitability

Official Patch Available
Workaround Available
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique
Collection
View detailed technique mapping

References

https://access.redhat.com/security/cve/CVE-2026-68742
access.redhat.com
https://bugzilla.redhat.com/show_bug.cgi?id=2509762
bugzilla.redhat.com

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