Skip to content
SUSE libssh Moderate Denial of Service and Info Disclosure Vuln 2026-3463

SUSE libssh Moderate Denial of Service and Info Disclosure Vuln 2026-3463

Linuxsecurity •LinuxSecurity Advisories • August 4, 2026

Audit Linux privileges now to limit compromise, escalation, and system-wide damage. Review Linux Privileges ×

## 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

## 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

* 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

Announcement ID: SUSE-SU-2026:3463-1 Release Date: 2026-08-03T12:18:59Z Rating: moderate

Get the latest Linux and open source security news straight to your inbox.