CVE-2026-68744: Fedoraproject Sssd

Low severity, CVSS 3.3. EPSS: 0.1% chance of exploitation in the next 30 days.

A flaw was found in SSSD. The sss_nss_protocol_fill_initgr() function in the NSS responder pre-allocates reply space for all group entries but does not shrink the packet when groups are skipped, causing uninitialized heap bytes to be transmitted to the client. A local attacker can exploit this to disclose cached directory data and heap layout information from the sssd_nss process.

Affected products

• Fedoraproject Sssd: affected versions not specified
• Red Hat Enterprise Linux: version 7.0 only; version 8.0 only; version 9.0 only; version 10.0 only
• Red Hat Openshift Container Platform: version 4.0 only

Published 2026-08-04. Last modified 2026-08-31.