CVE-2025-5372
A flaw was found in libssh versions built with OpenSSL versions older than 3.0, specifically in the ssh_kdf() function responsible for key derivation. Due to inconsistent interpretation of return values where OpenSSL uses 0 to indicate failure and libssh uses 0 for success—the function may mistakenly return a success status even when key derivation fails. This results in uninitialized cryptographic key buffers being used in subsequent communication, potentially compromising SSH sessions' confidentiality, integrity, and availability.
| Software | From | Fixed in |
|---|---|---|
| libssh / libssh | - | 0.11.2 |
| redhat / openshift_container_platform | 4.0 | 4.0.x |
| redhat / enterprise_linux | 6.0 | 6.0.x |
| redhat / enterprise_linux | 7.0 | 7.0.x |
| redhat / enterprise_linux | 8.0 | 8.0.x |
| redhat / enterprise_linux | 9.0 | 9.0.x |
| redhat / enterprise_linux | 10.0 | 10.0.x |
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