SB2026011206 - Red Hat Enterprise Linux 9 update for libssh
Published: January 12, 2026 Updated: February 24, 2026
Security Bulletin ID
SB2026011206
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Return of Wrong Status Code (CVE-ID: CVE-2025-5987)
The vulnerability allows a remote attacker to compromise the affected system.
The vulnerability exists due to incorrect handling of the wrong status code returned by the OpenSSL within the chacha20_poly1305_set_key() function when using the ChaCha20 cipher with the OpenSSL library. A remote attacker can force the library to partially initialize cipher context, leading to an undefined application's behavior.
Remediation
Install update from vendor's website.