CVE-2026-68744

Impact

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

Weakness classification

References

• NVD record
• CVE.org record
• https://access.redhat.com/security/cve/CVE-2026-68744
• https://bugzilla.redhat.com/show_bug.cgi?id=2509761