There's a vulnerability in the libssh package where when a libssh consumer passes in an unexpectedly large input buffer to ssh_get_fingerprint_hash() function. In such cases the bin_to_base64() function can experience an integer overflow leading to a memory under allocation, when that happens it's possible that the program perform out of bounds write leading to a heap corruption. This issue affects only 32-bits builds of libssh.
CVSS Details
- CVSS 3.1 Base Score: 4.5
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade libssh-configUpgrade libssh-develUpgrade libssh | May 27, 2026 | May 19, 2026 |
| Alpine Linux | — | Upgrade libssh | Aug 21, 2025 | Aug 20, 2025 |
| Debian | — | Upgrade libssh | Jun 26, 2025 | Jun 26, 2025 |
| Dell Powerstore Dsa2025429 | — | Upgrade Dell PowerStoreOS to the latest version | Dec 3, 2025 | Dec 2, 2025 |
| Dell Powerstore Dsa2026039 | — | Upgrade Dell PowerStoreOS to the latest version | Jan 13, 2026 | Jan 6, 2026 |
| Huawei Euleros 2_0_sp10 | — | Upgrade libssh | Nov 12, 2025 | Nov 6, 2025 |
| Huawei Euleros 2_0_sp11 | — | Upgrade libssh | Dec 12, 2025 | Nov 6, 2025 |
| Huawei Euleros 2_0_sp12 | — | Upgrade libssh | Nov 12, 2025 | Nov 6, 2025 |
| Huawei Euleros 2_0_sp13 | — | Upgrade libssh | Nov 21, 2025 | Nov 6, 2025 |
| Redhat_linux | — | Upgrade libsshUpgrade libssh-debugsourceUpgrade libssh-configUpgrade libssh-develUpgrade libssh-debuginfo | May 20, 2026 | Jun 24, 2025 |
| Rocky_linux | — | Upgrade libsshUpgrade libssh-debugsourceUpgrade libssh-develUpgrade libssh-debuginfo | Jun 1, 2026 | May 28, 2026 |
| Suse | — | Upgrade libssh-devel-docUpgrade libssh-develUpgrade libssh4Upgrade libssh4-32bitUpgrade libssh-config | Jul 7, 2025 | Jul 4, 2025 |
| Ubuntu | — | Upgrade libssh-4Upgrade libssh-4 (Ubuntu Pro) | Jul 8, 2025 | Jun 25, 2025 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Sep 2, 2025 | Aug 20, 2025 |
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