SUSE-SU-2025:03369-1: moderate: Security update for libssh

[SLE-SECURITY-UPDATES]

# Security update for libssh

Announcement ID: SUSE-SU-2025:03369-1  
Release Date: 2025-09-26T10:54:53Z  
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:

  * Basesystem Module 15-SP6
  * Basesystem Module 15-SP7
  * openSUSE Leap 15.6
  * SUSE Linux Enterprise Desktop 15 SP6
  * SUSE Linux Enterprise Desktop 15 SP7
  * SUSE Linux Enterprise Real Time 15 SP6
  * SUSE Linux Enterprise Real Time 15 SP7
  * SUSE Linux Enterprise Server 15 SP6
  * SUSE Linux Enterprise Server 15 SP7
  * SUSE Linux Enterprise Server for SAP Applications 15 SP6
  * SUSE Linux Enterprise Server for SAP Applications 15 SP7

  
  
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:

  * Basesystem Module 15-SP7  
    zypper in -t patch SUSE-SLE-Module-Basesystem-15-SP7-2025-3369=1

  * openSUSE Leap 15.6  
    zypper in -t patch SUSE-2025-3369=1 openSUSE-SLE-15.6-2025-3369=1

  * Basesystem Module 15-SP6  
    zypper in -t patch SUSE-SLE-Module-Basesystem-15-SP6-2025-3369=1

## Package List:

  * Basesystem Module 15-SP7 (aarch64 ppc64le s390x x86_64)
    * libssh-devel-0.9.8-150600.11.6.1
    * libssh-debugsource-0.9.8-150600.11.6.1
    * libssh-config-0.9.8-150600.11.6.1
    * libssh4-0.9.8-150600.11.6.1
    * libssh4-debuginfo-0.9.8-150600.11.6.1
  * Basesystem Module 15-SP7 (x86_64)
    * libssh4-32bit-debuginfo-0.9.8-150600.11.6.1
    * libssh4-32bit-0.9.8-150600.11.6.1
  * openSUSE Leap 15.6 (aarch64 ppc64le s390x x86_64 i586)
    * libssh-devel-0.9.8-150600.11.6.1
    * libssh-debugsource-0.9.8-150600.11.6.1
    * libssh-config-0.9.8-150600.11.6.1
    * libssh4-0.9.8-150600.11.6.1
    * libssh4-debuginfo-0.9.8-150600.11.6.1
  * openSUSE Leap 15.6 (x86_64)
    * libssh4-32bit-debuginfo-0.9.8-150600.11.6.1
    * libssh4-32bit-0.9.8-150600.11.6.1
  * openSUSE Leap 15.6 (aarch64_ilp32)
    * libssh4-64bit-0.9.8-150600.11.6.1
    * libssh4-64bit-debuginfo-0.9.8-150600.11.6.1
  * Basesystem Module 15-SP6 (aarch64 ppc64le s390x x86_64)
    * libssh-devel-0.9.8-150600.11.6.1
    * libssh-debugsource-0.9.8-150600.11.6.1
    * libssh-config-0.9.8-150600.11.6.1
    * libssh4-0.9.8-150600.11.6.1
    * libssh4-debuginfo-0.9.8-150600.11.6.1
  * Basesystem Module 15-SP6 (x86_64)
    * libssh4-32bit-debuginfo-0.9.8-150600.11.6.1
    * libssh4-32bit-0.9.8-150600.11.6.1

## 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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