SB20251024126 - SUSE update for libssh

Description

This security bulletin contains information about 2 secuirty vulnerabilities.

1) NULL pointer dereference (CVE-ID: CVE-2025-8114)

The vulnerability allows a remote attack to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error when calculating the session ID during the key exchange (KEX) process. A remote attacker can trick the victim into connecting to a malicious SSH server and crash the client app.

2) Memory leak (CVE-ID: CVE-2025-8277)

The vulnerability allows a remote attacker to perform DoS attack on the target system.

The vulnerability exists due memory leak when handling key exchange (KEX) processes if a client repeatedly sends incorrect KEX guesses. A remote attacker can trick the victim into connecting to a malicious SSH sever, force the application to leak memory and perform denial of service attack.

Remediation

Install update from vendor's website.

References

• https://www.suse.com/support/update/announcement/2025/suse-su-20253788-1/