Description (CNA)
A flaw was found in libssh's handling of key exchange (KEX) processes when a client repeatedly sends incorrect KEX guesses. The library fails to free memory during these rekey operations, which can gradually exhaust system memory. This issue can lead to crashes on the client side, particularly when using libgcrypt, which impacts application stability and availability.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Not supplied / Not supplied | affected 0.6.0 before 0.11.3 |
| Red Hat / Red Hat Enterprise Linux 9 | unaffected 0:0.10.4-18.el9 before * |
| Red Hat / Red Hat Enterprise Linux 9 | unaffected 0:0.10.4-18.el9 before * |
| Red Hat / Red Hat Enterprise Linux 10 | affected |
| Red Hat / Red Hat Enterprise Linux 6 | unknown |
| Red Hat / Red Hat Enterprise Linux 7 | affected |
| Red Hat / Red Hat Enterprise Linux 8 | affected |
| Red Hat / Red Hat OpenShift Container Platform 4 | affected |
| Red Hat / Red Hat OpenShift Container Platform 4 | affected |
CWE
CWE-401
References
- https://access.redhat.com/errata/RHSA-2026:18683
- https://access.redhat.com/security/cve/CVE-2025-8277
- https://bugzilla.redhat.com/show_bug.cgi?id=2383888
- https://www.libssh.org/security/advisories/CVE-2025-8277.txt
ADP enrichment
No English description supplied.
No references supplied.