In libssh2 v1.9.0 and earlier versions, the SSH_MSG_DISCONNECT logic in packet.c has an integer overflow in a bounds check, enabling an attacker to specify an arbitrary (out-of-bounds) offset for a subsequent memory read. A crafted SSH server may be able to disclose sensitive information or cause a denial of service condition on the client system when a user connects to the server.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade libssh2 | Nov 8, 2019 | Oct 21, 2019 |
| Amazon Linux Ami 2 | — | Upgrade libssh2Upgrade libssh2-docsUpgrade libssh2-develUpgrade libssh2-debuginfo | Oct 28, 2020 | Oct 21, 2019 |
| Centos_linux | — | Upgrade libssh2-debuginfoUpgrade libssh2-docsUpgrade libssh2Upgrade libssh2-devel | Oct 1, 2020 | Oct 21, 2019 |
| Debian | — | Upgrade libssh2 | Nov 14, 2019 | Oct 21, 2019 |
| Huawei Euleros 2_0_sp2 | — | Upgrade libssh2 | Dec 4, 2019 | Oct 21, 2019 |
| Huawei Euleros 2_0_sp3 | — | Upgrade libssh2 | Dec 18, 2019 | Oct 21, 2019 |
| Huawei Euleros 2_0_sp5 | — | Upgrade libssh2 | Dec 11, 2019 | Oct 21, 2019 |
| Huawei Euleros 2_0_sp8 | — | Upgrade libssh2 | Nov 28, 2019 | Oct 21, 2019 |
| Nutanix Ahv | — | Upgrade Nutanix AHV to the latest version | Jun 5, 2026 | Sep 19, 2022 |
| Oracle Solaris | — | Upgrade library/libssh2 to version 1.9.0-11.4.21.0.1.69.0 on Solaris 11.4 | Jan 19, 2021 | Oct 21, 2019 |
| Oracle_linux | — | Upgrade libssh2-develUpgrade libssh2Upgrade libssh2-docs | Oct 9, 2020 | Oct 16, 2019 |
| Redhat_linux | — | Upgrade libssh2-debuginfoUpgrade libssh2No solution existsUpgrade libssh2-docsUpgrade libssh2-devel | Oct 1, 2020 | Oct 21, 2019 |
| Suse | — | Upgrade libssh2-1Upgrade libssh2-develUpgrade libssh2-1-32bit | Nov 7, 2019 | Oct 21, 2019 |
| Ubuntu | — | Upgrade libssh2-1 (Ubuntu Pro) | Mar 22, 2023 | Oct 21, 2019 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jan 20, 2025 | Oct 21, 2019 |
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