Description (CNA)
A flaw was found in OpenSSH. This vulnerability, a heap out-of-bounds read, occurs during the cleanup of GSSAPI (Generic Security Service Application Programming Interface) indicators when a trailing NULL termination is missing in the auth-indicators array. A remote attacker, under specific configurations involving GSSAPI authentication and a Kerberos environment, could exploit this to cause the SSH authentication path to crash or abort. This leads to a denial of service (DoS), impacting the availability of the SSH service.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Red Hat / Red Hat Enterprise Linux 10 | unaffected 0:9.9p1-25.el10_2 before * |
| Red Hat / Red Hat Enterprise Linux 9 | unaffected 0:9.9p1-9.el9_8 before * |
| Red Hat / Red Hat Enterprise Linux 9 | unaffected 0:9.9p1-9.el9_8 before * |
| Red Hat / Red Hat Hardened Images | unaffected 10.3p1-6.hum1 before * |
| Red Hat / Red Hat Update Infrastructure 5 | unaffected 1786435483 before * |
| Red Hat / Red Hat Update Infrastructure 5 | unaffected 1786533529 before * |
| Red Hat / Red Hat Update Infrastructure 5 | unaffected 1787135742 before * |
| Red Hat / Red Hat Update Infrastructure 5 | unaffected 1787241260 before * |
| Red Hat / Red Hat Enterprise Linux 6 | unaffected |
| Red Hat / Red Hat Enterprise Linux 7 | unaffected |
| Red Hat / Red Hat Enterprise Linux 8 | unaffected |
| Red Hat / Red Hat OpenShift Container Platform 4 | affected |
| Red Hat / Red Hat OpenShift Container Platform 4 | affected |
CWE
CWE-125
References
- https://access.redhat.com/errata/RHSA-2026:36759
- https://access.redhat.com/errata/RHSA-2026:47756
- https://access.redhat.com/errata/RHSA-2026:47757
- https://access.redhat.com/errata/RHSA-2026:54387
- https://access.redhat.com/errata/RHSA-2026:58981
- https://access.redhat.com/security/cve/CVE-2026-55654
- https://bugzilla.redhat.com/show_bug.cgi?id=2462493
ADP enrichment
No English description supplied.
No references supplied.