SUSE-SU-2025:3788-1: moderate: Security update for libssh

[SLE-UPDATES]

# Security update for libssh

Announcement ID: SUSE-SU-2025:3788-1  
Release Date: 2025-10-24T13:28:59Z  
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:

  * openSUSE Leap 15.4
  * SUSE Linux Enterprise Micro 5.3
  * SUSE Linux Enterprise Micro 5.4
  * SUSE Linux Enterprise Micro 5.5
  * SUSE Linux Enterprise Micro for Rancher 5.3
  * SUSE Linux Enterprise Micro for Rancher 5.4

  
  
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 for Rancher 5.3  
    zypper in -t patch SUSE-SLE-Micro-5.3-2025-3788=1

  * SUSE Linux Enterprise Micro 5.3  
    zypper in -t patch SUSE-SLE-Micro-5.3-2025-3788=1

  * SUSE Linux Enterprise Micro for Rancher 5.4  
    zypper in -t patch SUSE-SLE-Micro-5.4-2025-3788=1

  * SUSE Linux Enterprise Micro 5.4  
    zypper in -t patch SUSE-SLE-Micro-5.4-2025-3788=1

  * SUSE Linux Enterprise Micro 5.5  
    zypper in -t patch SUSE-SLE-Micro-5.5-2025-3788=1

  * openSUSE Leap 15.4  
    zypper in -t patch SUSE-2025-3788=1

## Package List:

  * SUSE Linux Enterprise Micro for Rancher 5.3 (aarch64 s390x x86_64)
    * libssh-config-0.9.8-150400.3.12.1
    * libssh4-0.9.8-150400.3.12.1
    * libssh4-debuginfo-0.9.8-150400.3.12.1
    * libssh-debugsource-0.9.8-150400.3.12.1
  * SUSE Linux Enterprise Micro 5.3 (aarch64 s390x x86_64)
    * libssh-config-0.9.8-150400.3.12.1
    * libssh4-0.9.8-150400.3.12.1
    * libssh4-debuginfo-0.9.8-150400.3.12.1
    * libssh-debugsource-0.9.8-150400.3.12.1
  * SUSE Linux Enterprise Micro for Rancher 5.4 (aarch64 s390x x86_64)
    * libssh-config-0.9.8-150400.3.12.1
    * libssh4-0.9.8-150400.3.12.1
    * libssh4-debuginfo-0.9.8-150400.3.12.1
    * libssh-debugsource-0.9.8-150400.3.12.1
  * SUSE Linux Enterprise Micro 5.4 (aarch64 s390x x86_64)
    * libssh-config-0.9.8-150400.3.12.1
    * libssh4-0.9.8-150400.3.12.1
    * libssh4-debuginfo-0.9.8-150400.3.12.1
    * libssh-debugsource-0.9.8-150400.3.12.1
  * SUSE Linux Enterprise Micro 5.5 (aarch64 ppc64le s390x x86_64)
    * libssh-config-0.9.8-150400.3.12.1
    * libssh4-0.9.8-150400.3.12.1
    * libssh4-debuginfo-0.9.8-150400.3.12.1
    * libssh-debugsource-0.9.8-150400.3.12.1
  * openSUSE Leap 15.4 (aarch64 ppc64le s390x x86_64 i586)
    * libssh-debugsource-0.9.8-150400.3.12.1
    * libssh4-debuginfo-0.9.8-150400.3.12.1
    * libssh4-0.9.8-150400.3.12.1
    * libssh-devel-0.9.8-150400.3.12.1
    * libssh-config-0.9.8-150400.3.12.1
  * openSUSE Leap 15.4 (x86_64)
    * libssh4-32bit-0.9.8-150400.3.12.1
    * libssh4-32bit-debuginfo-0.9.8-150400.3.12.1
  * openSUSE Leap 15.4 (aarch64_ilp32)
    * libssh4-64bit-0.9.8-150400.3.12.1
    * libssh4-64bit-debuginfo-0.9.8-150400.3.12.1

## 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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