Input validation error in libssh - CVE-2026-0967

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Main Vulnerability Database Vulnerabilities #VU123155

Input validation error in libssh - CVE-2026-0967

Published: February 24, 2026


Vulnerability identifier: #VU123155
CSH Severity: Low
CVSS v4: 4.6 [CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-0967
CWE-ID: CWE-20
Exploitation vector: Local access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input within the match_pattern() function when comparing configuration files or known hosts against the hostname. A local user with ability to modify the configuration file or known_hosts file can crash the application. 


Affected software

libssh
SUSE Linux Enterprise Server 12 SP5 LTSS Extended
SUSE Linux Enterprise Server 12
SUSE Linux Enterprise Server for SAP Applications 12
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise Desktop 15
SUSE Linux Enterprise Micro for Rancher
SUSE Linux Enterprise Micro
SUSE Linux Micro
Basesystem Module
openSUSE Leap
Ubuntu
openEuler
Anolis OS
LANTIME Operating System Firmware (LTOS)
libssh (Ubuntu package)
libssh-debugsource
libssh-debuginfo
libssh
libssh-help
libssh-devel
libssh-config
libssh4-debuginfo-32bit
libssh4-32bit
libssh4-debuginfo
libssh4
libssh4-64bit-debuginfo
libssh4-64bit
libssh4-32bit-debuginfo
libssh-doc

How to mitigate CVE-2026-0967

Install updates from vendor's website.

libssh - update to 0.11.4
LANTIME Operating System Firmware (LTOS) - update to 7.10.009
libssh (Ubuntu package) - addressed in versions 0.6.3-4.3ubuntu0.6+esm4, 0.8.0~20170825.94fa1e38-1ubuntu0.7+esm6, 0.9.3-2ubuntu2.5+esm3
libssh-debugsource - addressed in versions 0.9.4-15, 0.9.6-15, 0.10.5-9
libssh-debuginfo - addressed in versions 0.9.4-15, 0.9.6-15, 0.10.5-9
libssh - addressed in versions 0.9.4-15, 0.9.6-15, 0.10.5-9
libssh-help - addressed in versions 0.9.4-15, 0.9.6-15, 0.10.5-9
libssh-devel - addressed in versions 0.9.4-15, 0.9.6-15, 0.10.5-9
libssh-config - addressed in versions 0.9.8-3.21.1, 0.9.8-150200.13.15.1, 0.9.8-150600.11.9.1, 0.11.4-160000.1.1
libssh4-debuginfo-32bit - update to 0.9.8-3.21.1
libssh4-32bit - addressed in versions 0.9.8-3.21.1, 0.9.8-150600.11.9.1
libssh4-debuginfo - addressed in versions 0.9.8-3.21.1, 0.9.8-150200.13.15.1, 0.9.8-150600.11.9.1, 0.11.4-160000.1.1
libssh4 - addressed in versions 0.9.8-3.21.1, 0.9.8-150200.13.15.1, 0.9.8-150600.11.9.1, 0.11.4-160000.1.1
libssh-debugsource - addressed in versions 0.9.8-3.21.1, 0.9.8-150200.13.15.1, 0.9.8-150600.11.9.1, 0.11.4-160000.1.1
libssh-devel - addressed in versions 0.9.8-3.21.1, 0.9.8-150600.11.9.1
libssh4-64bit-debuginfo - update to 0.9.8-150600.11.9.1
libssh4-64bit - update to 0.9.8-150600.11.9.1
libssh4-32bit-debuginfo - update to 0.9.8-150600.11.9.1
libssh - update to 0.10.5-13
libssh-doc - update to 0.10.5-13
libssh-config - update to 0.10.5-13
libssh-devel - update to 0.10.5-13

External References

Related Security Bulletins