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A flaw was found in libssh in which a malicious SFTP (SSH File Transfer Protocol) server can exploit this by sending a malformed 'longname' field within an `SSH_FXP_NAME` message during a file listing operation. This missing null check can lead to reading beyond allocated memory on the heap. This can cause unexpected behavior or lead to a denial of service (DoS) due to application crashes.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade libssh-develUpgrade libssh-configUpgrade libssh | May 27, 2026 | May 19, 2026 |
| Alpine Linux | — | Upgrade libssh | Apr 13, 2026 | Mar 26, 2026 |
| Amazon_linux_2023 | — | Upgrade libssh-debuginfoUpgrade libssh-develUpgrade libsshUpgrade libssh-configUpgrade libssh-debugsource | May 4, 2026 | Feb 10, 2026 |
| Debian | — | Upgrade libssh | Aug 3, 2026 | Aug 3, 2026 |
| Redhat_linux | — | No solution existsUpgrade libsshUpgrade libssh-develUpgrade libssh-configUpgrade libssh-debugsourceUpgrade libssh-debuginfo | May 20, 2026 | Feb 10, 2026 |
| Rocky_linux | — | Upgrade libssh-debugsourceUpgrade libssh-develUpgrade libsshUpgrade libssh-debuginfo | Jun 1, 2026 | May 28, 2026 |
| Suse | — | Upgrade libssh4-32bitUpgrade libssh4Upgrade libssh-devel-docUpgrade libssh-develUpgrade libssh-config | Mar 4, 2026 | Feb 17, 2026 |
| Ubuntu | — | Upgrade libssh-4Upgrade libssh-4 (Ubuntu Pro) | Feb 19, 2026 | Feb 13, 2026 |
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