Denial of Service Vulnerability in SSSD by Red Hat
CVE-2026-104035

5.5MEDIUM

Key Information:

Vendor

Red Hat
Status
Red Hat Enterprise Linux 10
Red Hat Enterprise Linux 6
Red Hat Enterprise Linux 7
Red Hat Enterprise Linux 8
Vendor
CVE Published:
6 October 2026

What is CVE-2026-104035?

A vulnerability in the System Security Services Daemon (SSSD) allows local users to trigger a Denial of Service condition. This issue arises from a flaw in the Kerberos Credential Manager (KCM) responder, where a persistent connection can be maintained by a user, enabling them to repeatedly store and destroy credentials. The failure to release cached objects from memory upon credential removal results in increasing memory consumption, which eventually depletes available memory resources and renders the service unresponsive. This issue highlights the importance of monitoring and managing resource consumption in critical services.

References

https://access.redhat.com/security/cve/CVE-2026-104035
vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2479107
issue-trackingx_refsource_REDHAT

CVSS V3.1

Score:
5.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

This issue was discovered by Found by AISLE in partnership with Red Hat.
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