SUSE-SU-2026:1344-1: moderate: Security update for libssh

Wed Apr 15 16:30:17 UTC 2026

# Security update for libssh

Announcement ID: SUSE-SU-2026:1344-1  
Release Date: 2026-04-15T10:21:31Z  
Rating: moderate  
References:

  * bsc#1258045
  * bsc#1258049
  * bsc#1258054
  * bsc#1258080
  * bsc#1258081
  * bsc#1259377

Cross-References:

  * CVE-2026-0964
  * CVE-2026-0965
  * CVE-2026-0966
  * CVE-2026-0967
  * CVE-2026-0968
  * CVE-2026-3731

CVSS scores:

  * CVE-2026-0964 ( SUSE ):  5.0 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L
  * CVE-2026-0964 ( NVD ):  5.0 CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L
  * CVE-2026-0965 ( SUSE ):  3.3 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
  * CVE-2026-0965 ( NVD ):  3.3 CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
  * CVE-2026-0966 ( SUSE ):  6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
  * CVE-2026-0966 ( NVD ):  6.5 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
  * CVE-2026-0967 ( SUSE ):  1.0
    CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
  * CVE-2026-0967 ( SUSE ):  2.2 CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:N/I:N/A:L
  * CVE-2026-0967 ( NVD ):  5.5 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
  * CVE-2026-0967 ( NVD ):  2.2 CVSS:3.0/AV:L/AC:H/PR:L/UI:R/S:U/C:N/I:N/A:L
  * CVE-2026-0968 ( SUSE ):  2.1
    CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:P/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N
  * CVE-2026-0968 ( SUSE ):  3.7 CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:L
  * CVE-2026-0968 ( NVD ):  3.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L
  * CVE-2026-0968 ( NVD ):  3.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L
  * CVE-2026-0968 ( NVD ):  3.1 CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L
  * CVE-2026-3731 ( SUSE ):  6.9
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
  * CVE-2026-3731 ( SUSE ):  5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
  * CVE-2026-3731 ( NVD ):  6.9
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
  * CVE-2026-3731 ( NVD ):  5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
  * CVE-2026-3731 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Products:

  * SUSE Linux Enterprise Server 12 SP5
  * SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security
  * SUSE Linux Enterprise Server for SAP Applications 12 SP5

An update that solves six vulnerabilities can now be installed.

## Description:

This update for libssh fixes the following issues:

  * CVE-2026-3731: denial of service via out-of-bounds read in SFTP extension
    name handler (bsc#1259377).
  * CVE-2026-0964: SCP protocol path traversal in `ssh_scp_pull_request()`
    (bsc#1258049).
  * CVE-2026-0965: possible denial of service when parsing unexpected
    configuration files (bsc#1258045).
  * CVE-2026-0966: buffer underflow in `ssh_get_hexa()` on invalid input
    (bsc#1258054).
  * CVE-2026-0967: specially crafted patterns could cause a denial of service
    (bsc#1258081).
  * CVE-2026-0968: out-of-bounds read in `sftp_parse_longname()` (bsc#1258080).

## 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 Server 12 SP5 LTSS Extended Security  
    zypper in -t patch SUSE-SLE-SERVER-12-SP5-LTSS-EXTENDED-SECURITY-2026-1344=1

## Package List:

  * SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security (x86_64)
    * libssh-devel-doc-0.6.3-12.28.1

## References:

  * https://www.suse.com/security/cve/CVE-2026-0964.html
  * https://www.suse.com/security/cve/CVE-2026-0965.html
  * https://www.suse.com/security/cve/CVE-2026-0966.html
  * https://www.suse.com/security/cve/CVE-2026-0967.html
  * https://www.suse.com/security/cve/CVE-2026-0968.html
  * https://www.suse.com/security/cve/CVE-2026-3731.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1258045
  * https://bugzilla.suse.com/show_bug.cgi?id=1258049
  * https://bugzilla.suse.com/show_bug.cgi?id=1258054
  * https://bugzilla.suse.com/show_bug.cgi?id=1258080
  * https://bugzilla.suse.com/show_bug.cgi?id=1258081
  * https://bugzilla.suse.com/show_bug.cgi?id=1259377

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