OPENSUSE-SU-2026:21444-1: libssh&distro=openSUSE Leap 16.0 openSUSE

Vulnerability summary

OPENSUSE-SU-2026:21444-1 is a vulnerability in libssh&distro=openSUSE Leap 16.0 openSUSE with no CVSS score yet.

Timeline

1. 25-07-2026
   PublishedVulnerability first disclosed.
2. 26-07-2026
   Last modifiedVulnerability information updated.

Description

Security update for libssh This update for libssh fixes the following issues: - CVE-2026-15370: stack buffer overflow in SFTP server longname construction (bsc#1272162). - CVE-2026-59843: denial of service via zero advertised channel packet size (bsc#1272164). - CVE-2026-59844: denial of service via oversized SFTP read length (bsc#1272165). - CVE-2026-59845: denial of service via unchecked ProxyCommand fork() failure (bsc#1272166). - CVE-2026-59846: information disclosure via ProxyCommand %r username expansion (bsc#1272167). - CVE-2026-59847: integrity downgrade via OpenSSL AES-GCM tag verification (bsc#1272168). - CVE-2026-59848: denial of service via SFTP responses with unknown request IDs (bsc#1272169). - CVE-2026-59849: denial of service via automatic certificate authentication loop (bsc#1272170). - CVE-2026-59850: use-after-free via data callbacks on closed channels (bsc#1272171). Changes for libssh: - Update to 0.11.5: * Zero-initialize every ssh_string * Fix compatibility with C23 / gcc16 * Fix multiple memory leaks, null checks, and error checks * Validate peer public key in DH key exchange * Avoid remote window overflow * Avoid off-by-one overflow during kbdint authentication * Avoid logging uninitialized sequence numbers * Avoid double conversion of SFTP version number * Send correct SFTP server version number * Avoid handling repeated SFTP INIT messages * Harmonize return values from SFTP server callbacks - Update %suse_version checks for SLES 16.x (jsc#PED-15815)

No weakness data has been published for this record.