SUSE alert SUSE-SU-2026:3463-1 (libssh)
| From: | OPENSUSE-SECURITY-UPDATES <null@suse.de> | |
| To: | security-announce@lists.opensuse.org | |
| Subject: | SUSE-SU-2026:3463-1: moderate: Security update for libssh | |
| Date: | Mon, 03 Aug 2026 20:33:01 -0000 | |
| Message-ID: | <178578918126.99.1912228341302675330@343aec21e6f1> | |
| Archive-link: | Article |
# Security update for libssh Announcement ID: SUSE-SU-2026:3463-1 Release Date: 2026-08-03T12:18:59Z Rating: moderate References: * bsc#1272164 * bsc#1272165 * bsc#1272166 * bsc#1272167 * bsc#1272168 * bsc#1272169 * bsc#1272171 Cross-References: * CVE-2026-59843 * CVE-2026-59844 * CVE-2026-59845 * CVE-2026-59846 * CVE-2026-59847 * CVE-2026-59848 * CVE-2026-59850 CVSS scores: * CVE-2026-59843 ( SUSE ): 7.1 CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N * CVE-2026-59843 ( SUSE ): 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H * CVE-2026-59843 ( NVD ): 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H * CVE-2026-59844 ( SUSE ): 7.1 CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N * CVE-2026-59844 ( SUSE ): 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H * CVE-2026-59844 ( NVD ): 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H * CVE-2026-59845 ( SUSE ): 8.2 CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H * CVE-2026-59845 ( SUSE ): 6.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H * CVE-2026-59845 ( NVD ): 5.3 CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:N/I:N/A:H * CVE-2026-59845 ( NVD ): 5.9 CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:N/I:N/A:H * CVE-2026-59846 ( SUSE ): 2.4 CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N * CVE-2026-59846 ( SUSE ): 3.9 CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N * CVE-2026-59846 ( NVD ): 3.9 CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N * CVE-2026-59847 ( SUSE ): 8.3 CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N * CVE-2026-59847 ( SUSE ): 6.5 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:L * CVE-2026-59847 ( NVD ): 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N * CVE-2026-59847 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N * CVE-2026-59848 ( SUSE ): 6.3 CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N * CVE-2026-59848 ( SUSE ): 3.7 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L * CVE-2026-59848 ( NVD ): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L * CVE-2026-59850 ( SUSE ): 5.3 CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N * CVE-2026-59850 ( SUSE ): 4.3 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L * CVE-2026-59850 ( NVD ): 4.3 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L * CVE-2026-59850 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Affected Products: * openSUSE Leap 15.4 * SUSE Linux Enterprise High Performance Computing 15 SP4 * SUSE Linux Enterprise High Performance Computing 15 SP5 * SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4 * SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5 * SUSE Linux Enterprise High Performance Computing LTSS 15 SP4 * SUSE Linux Enterprise High Performance Computing LTSS 15 SP5 * 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 * SUSE Linux Enterprise Server 15 SP4 * SUSE Linux Enterprise Server 15 SP4 LTSS * SUSE Linux Enterprise Server 15 SP5 * SUSE Linux Enterprise Server 15 SP5 LTSS * SUSE Linux Enterprise Server for SAP Applications 15 SP4 * SUSE Linux Enterprise Server for SAP Applications 15 SP5 An update that solves seven vulnerabilities can now be installed. ## Description: This update for libssh fixes the following issues: * CVE-2026-59843: denial of service via zero advertised channel packet size (bsc#1272164). * CVE-2026-59844: denial of service via oversized SFTP read length (bsc#1272165). * CVE-2026-59845: denial of service via unchecked ProxyCommand fork() failure (bsc#1272166). * CVE-2026-59846: information disclosure via ProxyCommand %r username expansion (bsc#1272167). * CVE-2026-59847: integrity downgrade via OpenSSL AES-GCM tag verification (bsc#1272168). * CVE-2026-59848: denial of service via SFTP responses with unknown request IDs (bsc#1272169). * CVE-2026-59850: use-after-free via data callbacks on closed channels (bsc#1272171). ## 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 High Performance Computing LTSS 15 SP5 zypper in -t patch SUSE-SLE-Product-HPC-15-SP5-LTSS-2026-3463=1 * SUSE Linux Enterprise Server 15 SP5 LTSS zypper in -t patch SUSE-SLE-Product-SLES-15-SP5-LTSS-2026-3463=1 * SUSE Linux Enterprise Micro 5.5 zypper in -t patch SUSE-SLE-Micro-5.5-2026-3463=1 * SUSE Linux Enterprise Server for SAP Applications 15 SP4 zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP4-2026-3463=1 * SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5 zypper in -t patch SUSE-SLE-Product-HPC-15-SP5-ESPOS-2026-3463=1 * SUSE Linux Enterprise Server 15 SP4 LTSS zypper in -t patch SUSE-SLE-Product-SLES-15-SP4-LTSS-2026-3463=1 * SUSE Linux Enterprise High Performance Computing LTSS 15 SP4 zypper in -t patch SUSE-SLE-Product-HPC-15-SP4-LTSS-2026-3463=1 * SUSE Linux Enterprise Micro for Rancher 5.3 zypper in -t patch SUSE-SLE-Micro-5.3-2026-3463=1 * SUSE Linux Enterprise Micro 5.3 zypper in -t patch SUSE-SLE-Micro-5.3-2026-3463=1 * SUSE Linux Enterprise Server for SAP Applications 15 SP5 zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP5-2026-3463=1 * SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4 zypper in -t patch SUSE-SLE-Product-HPC-15-SP4-ESPOS-2026-3463=1 * SUSE Linux Enterprise Micro for Rancher 5.4 zypper in -t patch SUSE-SLE-Micro-5.4-2026-3463=1 * SUSE Linux Enterprise Micro 5.4 zypper in -t patch SUSE-SLE-Micro-5.4-2026-3463=1 * openSUSE Leap 15.4 zypper in -t patch SUSE-2026-3463=1 ## Package List: * SUSE Linux Enterprise Server for SAP Applications 15 SP5 (ppc64le x86_64) * libssh-devel-0.9.8-150400.3.20.1 * libssh-config-0.9.8-150400.3.20.1 * libssh-debugsource-0.9.8-150400.3.20.1 * libssh4-debuginfo-0.9.8-150400.3.20.1 * libssh4-0.9.8-150400.3.20.1 * SUSE Linux Enterprise Server for SAP Applications 15 SP5 (x86_64) * libssh4-32bit-debuginfo-0.9.8-150400.3.20.1 * libssh4-32bit-0.9.8-150400.3.20.1 * SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4 (aarch64 x86_64) * libssh-devel-0.9.8-150400.3.20.1 * libssh4-0.9.8-150400.3.20.1 * libssh-config-0.9.8-150400.3.20.1 * libssh4-debuginfo-0.9.8-150400.3.20.1 * libssh-debugsource-0.9.8-150400.3.20.1 * SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4 (x86_64) * libssh4-32bit-debuginfo-0.9.8-150400.3.20.1 * libssh4-32bit-0.9.8-150400.3.20.1 * openSUSE Leap 15.4 (aarch64 i586 ppc64le s390x x86_64) * libssh-devel-0.9.8-150400.3.20.1 * libssh-config-0.9.8-150400.3.20.1 * libssh-debugsource-0.9.8-150400.3.20.1 * libssh4-debuginfo-0.9.8-150400.3.20.1 * libssh4-0.9.8-150400.3.20.1 * openSUSE Leap 15.4 (x86_64) * libssh4-32bit-debuginfo-0.9.8-150400.3.20.1 * libssh4-32bit-0.9.8-150400.3.20.1 * openSUSE Leap 15.4 (aarch64_ilp32) * libssh4-64bit-debuginfo-0.9.8-150400.3.20.1 * libssh4-64bit-0.9.8-150400.3.20.1 * SUSE Linux Enterprise Server 15 SP4 LTSS (aarch64 ppc64le s390x x86_64) * libssh-devel-0.9.8-150400.3.20.1 * libssh4-0.9.8-150400.3.20.1 * libssh-config-0.9.8-150400.3.20.1 * libssh4-debuginfo-0.9.8-150400.3.20.1 * libssh-debugsource-0.9.8-150400.3.20.1 * SUSE Linux Enterprise Server 15 SP4 LTSS (x86_64) * libssh4-32bit-debuginfo-0.9.8-150400.3.20.1 * libssh4-32bit-0.9.8-150400.3.20.1 * SUSE Linux Enterprise Server 15 SP5 LTSS (aarch64 ppc64le s390x x86_64) * libssh-devel-0.9.8-150400.3.20.1 * libssh4-0.9.8-150400.3.20.1 * libssh-config-0.9.8-150400.3.20.1 * libssh4-debuginfo-0.9.8-150400.3.20.1 * libssh-debugsource-0.9.8-150400.3.20.1 * SUSE Linux Enterprise Server 15 SP5 LTSS (x86_64) * libssh4-32bit-debuginfo-0.9.8-150400.3.20.1 * libssh4-32bit-0.9.8-150400.3.20.1 * SUSE Linux Enterprise Micro for Rancher 5.4 (aarch64 s390x x86_64) * libssh-config-0.9.8-150400.3.20.1 * libssh4-debuginfo-0.9.8-150400.3.20.1 * libssh-debugsource-0.9.8-150400.3.20.1 * libssh4-0.9.8-150400.3.20.1 * SUSE Linux Enterprise Micro 5.4 (aarch64 s390x x86_64) * libssh-config-0.9.8-150400.3.20.1 * libssh4-debuginfo-0.9.8-150400.3.20.1 * libssh-debugsource-0.9.8-150400.3.20.1 * libssh4-0.9.8-150400.3.20.1 * SUSE Linux Enterprise Server for SAP Applications 15 SP4 (ppc64le x86_64) * libssh-devel-0.9.8-150400.3.20.1 * libssh4-0.9.8-150400.3.20.1 * libssh-config-0.9.8-150400.3.20.1 * libssh4-debuginfo-0.9.8-150400.3.20.1 * libssh-debugsource-0.9.8-150400.3.20.1 * SUSE Linux Enterprise Server for SAP Applications 15 SP4 (x86_64) * libssh4-32bit-debuginfo-0.9.8-150400.3.20.1 * libssh4-32bit-0.9.8-150400.3.20.1 * SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5 (aarch64 x86_64) * libssh-devel-0.9.8-150400.3.20.1 * libssh4-0.9.8-150400.3.20.1 * libssh-config-0.9.8-150400.3.20.1 * libssh4-debuginfo-0.9.8-150400.3.20.1 * libssh-debugsource-0.9.8-150400.3.20.1 * SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5 (x86_64) * libssh4-32bit-debuginfo-0.9.8-150400.3.20.1 * libssh4-32bit-0.9.8-150400.3.20.1 * SUSE Linux Enterprise High Performance Computing LTSS 15 SP5 (aarch64 x86_64) * libssh-devel-0.9.8-150400.3.20.1 * libssh4-0.9.8-150400.3.20.1 * libssh-config-0.9.8-150400.3.20.1 * libssh4-debuginfo-0.9.8-150400.3.20.1 * libssh-debugsource-0.9.8-150400.3.20.1 * SUSE Linux Enterprise High Performance Computing LTSS 15 SP5 (x86_64) * libssh4-32bit-debuginfo-0.9.8-150400.3.20.1 * libssh4-32bit-0.9.8-150400.3.20.1 * SUSE Linux Enterprise High Performance Computing LTSS 15 SP4 (aarch64 x86_64) * libssh-devel-0.9.8-150400.3.20.1 * libssh-config-0.9.8-150400.3.20.1 * libssh-debugsource-0.9.8-150400.3.20.1 * libssh4-debuginfo-0.9.8-150400.3.20.1 * libssh4-0.9.8-150400.3.20.1 * SUSE Linux Enterprise High Performance Computing LTSS 15 SP4 (x86_64) * libssh4-32bit-debuginfo-0.9.8-150400.3.20.1 * libssh4-32bit-0.9.8-150400.3.20.1 * SUSE Linux Enterprise Micro 5.5 (aarch64 ppc64le s390x x86_64) * libssh-config-0.9.8-150400.3.20.1 * libssh-debugsource-0.9.8-150400.3.20.1 * libssh4-debuginfo-0.9.8-150400.3.20.1 * libssh4-0.9.8-150400.3.20.1 * SUSE Linux Enterprise Micro for Rancher 5.3 (aarch64 s390x x86_64) * libssh-config-0.9.8-150400.3.20.1 * libssh-debugsource-0.9.8-150400.3.20.1 * libssh4-debuginfo-0.9.8-150400.3.20.1 * libssh4-0.9.8-150400.3.20.1 * SUSE Linux Enterprise Micro 5.3 (aarch64 s390x x86_64) * libssh-config-0.9.8-150400.3.20.1 * libssh-debugsource-0.9.8-150400.3.20.1 * libssh4-debuginfo-0.9.8-150400.3.20.1 * libssh4-0.9.8-150400.3.20.1 ## References: * https://www.suse.com/security/cve/CVE-2026-59843.html * https://www.suse.com/security/cve/CVE-2026-59844.html * https://www.suse.com/security/cve/CVE-2026-59845.html * https://www.suse.com/security/cve/CVE-2026-59846.html * https://www.suse.com/security/cve/CVE-2026-59847.html * https://www.suse.com/security/cve/CVE-2026-59848.html * https://www.suse.com/security/cve/CVE-2026-59850.html * https://bugzilla.suse.com/show_bug.cgi?id=1272164 * https://bugzilla.suse.com/show_bug.cgi?id=1272165 * https://bugzilla.suse.com/show_bug.cgi?id=1272166 * https://bugzilla.suse.com/show_bug.cgi?id=1272167 * https://bugzilla.suse.com/show_bug.cgi?id=1272168 * https://bugzilla.suse.com/show_bug.cgi?id=1272169 * https://bugzilla.suse.com/show_bug.cgi?id=1272171
Attachment: None (type=text/html)
(HTML attachment elided)