libssh: A flaw was found in libssh
CVE-2026-15370 is fixed in 6 products on 1 platform, first by libssh-4 0.11.3-1ubuntu2.1, released July 21, 2026. It is not reported as exploited. Patch Radar priority: High.
A flaw was found in libssh. During SFTP server directory listing, the longname field is constructed with unsafe concatenation into a fixed-size stack buffer. When a client causes the server to list attacker-controlled filenames, sufficiently long names can overflow that stack buffer and may lead to crashes or possible code execution on the server.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| libssh · Debian 13.5 (trixie) | 0.11.5-0+deb13u1 | DEBIAN-CVE-2026-15370 | Jul 31, 2026 |
| libssh · Debian 14 | 0.12.1-1 | DEBIAN-CVE-2026-15370 | Jul 31, 2026 |
| libssh · Fedora 43 | 0.11.5-1.fc43 | FEDORA-2026-063CAA9112 | Jul 21, 2026 |
| libssh · RHEL 10 | 0.12.0-3.el10_2 | RHSA-2026:55855 | Aug 18, 2026 |
| libssh · almalinux 10 | 0.12.0-3.el10_2 | ALSA-2026:55855 | Aug 17, 2026 |
| libssh · ol 10 | 0:0.12.0-3.el10_2 | ELSA-2026-55855 | Aug 17, 2026 |
| libssh · opensuse-leap 16.0 | 0.11.5-160000.1.1 | OPENSUSE-SU-2026:21444-1 | Jul 25, 2026 |
| libssh · rocky 10 | 0:0.12.0-3.el10_2 | RLSA-2026:55855 | Aug 18, 2026 |
| libssh · sles 16.0 | 0.11.5-160000.1.1 | SUSE-SU-2026:22956-1 | Jul 25, 2026 |
| libssh-4 · Ubuntu 26.04.1 LTS (resolute) | 0.11.3-1ubuntu2.1 | libssh-4 0.11.3-1ubuntu2.1 | Jul 21, 2026 |
| libssh-config · Fedora 43 | 0.11.5-1.fc43 | FEDORA-2026-063CAA9112 | Jul 21, 2026 |
| libssh-config · almalinux 10 | 0.12.0-3.el10_2 | ALSA-2026:55855 | Aug 17, 2026 |
| libssh-config · ol 10 | 0:0.12.0-3.el10_2 | ELSA-2026-55855 | Aug 17, 2026 |
| libssh-debuginfo · Fedora 43 | 0.11.5-1.fc43 | FEDORA-2026-063CAA9112 | Jul 21, 2026 |
| libssh-debugsource · Fedora 43 | 0.11.5-1.fc43 | FEDORA-2026-063CAA9112 | Jul 21, 2026 |
| libssh-devel · Fedora 43 | 0.11.5-1.fc43 | FEDORA-2026-063CAA9112 | Jul 21, 2026 |
| libssh-devel · almalinux 10 | 0.12.0-3.el10_2 | ALSA-2026:55855 | Aug 17, 2026 |
| libssh-devel · ol 10 | 0:0.12.0-3.el10_2 | ELSA-2026-55855 | Aug 17, 2026 |
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