CVE-2026-68742

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.

Score

CVSS 3.1 5.5 Medium

Status

Analyzed - secalert@redhat.com

Published

2026-08-03

Last modified

2026-08-31

Weaknesses

CWE-125

Affected products

• Sssd (Fedoraproject)
• Enterprise Linux (Redhat)
• Openshift (Redhat)
• Openshift Container Platform (Redhat)

References

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