| Name | CVE-2026-0968 |
| Description | 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. |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DSA-6410-1 |
| Debian Bugs | 1127693 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| libssh (PTS) | bullseye | 0.9.8-0+deb11u1 | vulnerable |
| bullseye (security) | 0.9.8-0+deb11u2 | vulnerable |
| bookworm | 0.10.6-0+deb12u2 | vulnerable |
| bookworm (security) | 0.10.6-0+deb12u1 | vulnerable |
| trixie | 0.11.2-1+deb13u1 | vulnerable |
| trixie (security) | 0.11.5-0+deb13u1 | fixed |
| forky, sid | 0.12.2-1 | fixed |
The information below is based on the following data on fixed versions.
Notes
[bookworm] - libssh <no-dsa> (Minor issue)
[bullseye] - libssh <postponed> (Minor issue)
https://www.libssh.org/security/advisories/CVE-2026-0968.txt
Tests: https://git.libssh.org/projects/libssh.git/commit/?id=212121971fb26e1e00b72bd5402c0454a4d84c03 (libssh-0.11.4)
Fixed by: https://git.libssh.org/projects/libssh.git/commit/?id=796d85f786dff62bd4bcc4408d9b7bbc855841e9 (libssh-0.11.4)