libssh-4: A flaw was found in the SFTP server message decoding logic of libssh
CVE-2025-5449 is fixed in 2 products on 1 platform, first by libssh-4 0.11.1-1ubuntu0.1, released June 25, 2025. It is not reported as exploited. Patch Radar priority: Routine.
A flaw was found in the SFTP server message decoding logic of libssh. Theissue occurs due to an incorrect packet length check that allows an integeroverflow when handling large payload sizes on 32-bit systems. This issueleads to failed memory allocation and causes the server process to crash,resulting in a denial of service.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| libssh · Debian 13.5 (trixie) | 0.11.2-1 | DEBIAN-CVE-2025-5449 | Jul 25, 2025 |
| libssh · Debian 14 | 0.11.2-1 | DEBIAN-CVE-2025-5449 | Jul 25, 2025 |
| libssh-4 · Ubuntu 25.04 (plucky) | 0.11.1-1ubuntu0.1 | libssh-4 0.11.1-1ubuntu0.1 | Jun 25, 2025 |
Patch Radar data is free to use with attribution. Terms and how to credit it.
Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.