Description
A flaw was found in sssd. A local user can cause a Denial of Service (DoS) by exhausting the responder service's available file descriptors (system handles used for open connections). By opening and maintaining many concurrent connections to a responder socket while continuing to queue new connection attempts, an attacker can trigger an unthrottled retry loop. This condition leads to high CPU utilization and stalls the service, preventing legitimate identity and authentication requests from being processed.
Affected products
fedoraproject: sssd; redhat: openshift container platform; redhat: enterprise linux
References3
- access.redhat.com/security/cve/CVE-2026-88252 Vendor Advisory
- bugzilla.redhat.com/show_bug.cgi?id=2479240 ExploitIssue TrackingMitigationVendor Advisory
- bugzilla.redhat.com/show_bug.cgi?id=2479240 ExploitIssue TrackingMitigationVendor Advisory
Metrics
- CVSS 3.1
-
5.5
MEDIUM
Score source: NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - EPSS — exploit probability
- 0% percentile: 3 · as of 10 November 2026
- CWE
- CWE-835
Could this be exploited in your environment?
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