Red Hat Security Advisory: libssh security update
libssh is a library which implements the SSH protocol. It can be used to implement client and server applications. Security Fix(es): * libssh: Incorrect Return Code Handling in ssh_kdf() in libssh (CVE-2025-5372) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
AI Analysis
Technical Summary
The vulnerability CVE-2025-5372 in libssh concerns incorrect return code handling in the ssh_kdf() function, which is part of the key derivation process in the SSH protocol implementation. This flaw could potentially affect the correctness of cryptographic operations relying on this function. Red Hat has released updated libssh packages for Red Hat Enterprise Linux 8 across multiple architectures to fix this issue. The advisory classifies the security impact as moderate. No detailed CVSS vector or score is available. The update is documented in Red Hat advisory RHSA-2025:21977.
Potential Impact
The vulnerability may cause improper handling of return codes in the key derivation function within libssh, potentially leading to incorrect cryptographic behavior. The exact impact is not detailed beyond the moderate severity rating provided by Red Hat. There are no known exploits in the wild at this time.
Mitigation Recommendations
Red Hat has released updated libssh packages for Red Hat Enterprise Linux 8 to address this vulnerability. Users should apply the security update as described in Red Hat advisory RHSA-2025:21977 and the related article https://access.redhat.com/articles/11258. This update fixes the incorrect return code handling in ssh_kdf(). No additional mitigation steps are indicated by the vendor.
Red Hat Security Advisory: libssh security update
Description
libssh is a library which implements the SSH protocol. It can be used to implement client and server applications. Security Fix(es): * libssh: Incorrect Return Code Handling in ssh_kdf() in libssh (CVE-2025-5372) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability CVE-2025-5372 in libssh concerns incorrect return code handling in the ssh_kdf() function, which is part of the key derivation process in the SSH protocol implementation. This flaw could potentially affect the correctness of cryptographic operations relying on this function. Red Hat has released updated libssh packages for Red Hat Enterprise Linux 8 across multiple architectures to fix this issue. The advisory classifies the security impact as moderate. No detailed CVSS vector or score is available. The update is documented in Red Hat advisory RHSA-2025:21977.
Potential Impact
The vulnerability may cause improper handling of return codes in the key derivation function within libssh, potentially leading to incorrect cryptographic behavior. The exact impact is not detailed beyond the moderate severity rating provided by Red Hat. There are no known exploits in the wild at this time.
Mitigation Recommendations
Red Hat has released updated libssh packages for Red Hat Enterprise Linux 8 to address this vulnerability. Users should apply the security update as described in Red Hat advisory RHSA-2025:21977 and the related article https://access.redhat.com/articles/11258. This update fixes the incorrect return code handling in ssh_kdf(). No additional mitigation steps are indicated by the vendor.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:20610
- Cve Count
- 1
Threat ID: 6a16097ee29bf47b5064afbd
Added to database: 05/26/2026, 20:58:38 UTC
Last enriched: 07/12/2026, 09:34:24 UTC
Last updated: 09/10/2026, 19:36:51 UTC
Views: 168
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