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.
Metrics
Affected Vendors & Products
References
History
Tue, 18 Aug 2026 16:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Fedoraproject
Fedoraproject sssd Redhat openshift Container Platform |
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| CPEs | cpe:2.3:a:fedoraproject:sssd:-:*:*:*:*:*:*:* cpe:2.3:a:redhat:openshift_container_platform:4.0:*:*:*:*:*:*:* cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:*:* cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:* |
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| Vendors & Products |
Fedoraproject
Fedoraproject sssd Redhat openshift Container Platform |
Tue, 04 Aug 2026 15:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
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Tue, 04 Aug 2026 05:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Title | sssd: sssd: NSS responder uninitialized heap disclosure in initgroups reply | Sssd: sssd: nss responder uninitialized heap disclosure in initgroups reply |
| First Time appeared |
Redhat
Redhat enterprise Linux Redhat openshift |
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| CPEs | cpe:/a:redhat:openshift:4 cpe:/o:redhat:enterprise_linux:10 cpe:/o:redhat:enterprise_linux:6 cpe:/o:redhat:enterprise_linux:7 cpe:/o:redhat:enterprise_linux:8 cpe:/o:redhat:enterprise_linux:9 |
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| Vendors & Products |
Redhat
Redhat enterprise Linux Redhat openshift |
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| References |
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Mon, 03 Aug 2026 13:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Sssd
Sssd sssd |
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| Vendors & Products |
Sssd
Sssd sssd |
Mon, 03 Aug 2026 12:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | 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. | |
| Title | sssd: sssd: NSS responder uninitialized heap disclosure in initgroups reply | |
| Weaknesses | CWE-908 | |
| References |
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| Metrics |
threat_severity
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cvssV3_1
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Status: PUBLISHED
Assigner: redhat
Published: 2026-08-04T05:28:30.450Z
Updated: 2026-08-31T18:18:21.132Z
Reserved: 2026-07-31T12:44:34.409Z
Link: CVE-2026-68744
Updated: 2026-08-04T14:19:35.047Z
Status : Analyzed
Published: 2026-08-04T06:16:30.490
Modified: 2026-08-31T19:17:10.443
Link: CVE-2026-68744