SUSE-SU-2025:3787-1: moderate: Security update for libssh

[SLE-UPDATES]

# Security update for libssh

Announcement ID: SUSE-SU-2025:3787-1  
Release Date: 2025-10-24T13:28:41Z  
Rating: moderate  
References:

  * bsc#1246974
  * bsc#1249375

  
Cross-References:

  * CVE-2025-8114
  * CVE-2025-8277

  
CVSS scores:

  * CVE-2025-8114 ( SUSE ):  5.7
    CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
  * CVE-2025-8114 ( SUSE ):  4.7 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
  * CVE-2025-8114 ( NVD ):  4.7 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
  * CVE-2025-8114 ( NVD ):  4.7 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
  * CVE-2025-8277 ( SUSE ):  3.1 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L
  * CVE-2025-8277 ( NVD ):  3.1 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L

  
Affected Products:

  * SUSE Linux Enterprise Micro 5.1
  * SUSE Linux Enterprise Micro 5.2
  * SUSE Linux Enterprise Micro for Rancher 5.2

  
  
An update that solves two vulnerabilities can now be installed.

## Description:

This update for libssh fixes the following issues:

  * CVE-2025-8277: memory exhaustion leading to client-side DoS due to improper
    memory management when KEX process is repeated with incorrect guesses
    (bsc#1249375).
  * CVE-2025-8114: NULL pointer dereference when an allocation error happens
    during the calculation of the KEX session ID (bsc#1246974).

## Patch Instructions:

To install this SUSE update use the SUSE recommended installation methods like
YaST online_update or "zypper patch".  
Alternatively you can run the command listed for your product:

  * SUSE Linux Enterprise Micro 5.1  
    zypper in -t patch SUSE-SUSE-MicroOS-5.1-2025-3787=1

  * SUSE Linux Enterprise Micro 5.2  
    zypper in -t patch SUSE-SUSE-MicroOS-5.2-2025-3787=1

  * SUSE Linux Enterprise Micro for Rancher 5.2  
    zypper in -t patch SUSE-SUSE-MicroOS-5.2-2025-3787=1

## Package List:

  * SUSE Linux Enterprise Micro 5.1 (aarch64 s390x x86_64)
    * libssh-debugsource-0.9.8-150200.13.12.1
    * libssh-config-0.9.8-150200.13.12.1
    * libssh4-0.9.8-150200.13.12.1
    * libssh4-debuginfo-0.9.8-150200.13.12.1
  * SUSE Linux Enterprise Micro 5.2 (aarch64 s390x x86_64)
    * libssh-debugsource-0.9.8-150200.13.12.1
    * libssh-config-0.9.8-150200.13.12.1
    * libssh4-0.9.8-150200.13.12.1
    * libssh4-debuginfo-0.9.8-150200.13.12.1
  * SUSE Linux Enterprise Micro for Rancher 5.2 (aarch64 s390x x86_64)
    * libssh-debugsource-0.9.8-150200.13.12.1
    * libssh-config-0.9.8-150200.13.12.1
    * libssh4-0.9.8-150200.13.12.1
    * libssh4-debuginfo-0.9.8-150200.13.12.1

## References:

  * https://www.suse.com/security/cve/CVE-2025-8114.html
  * https://www.suse.com/security/cve/CVE-2025-8277.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1246974
  * https://bugzilla.suse.com/show_bug.cgi?id=1249375

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