SUSE-SU-2026:22956-1

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Source
https://www.suse.com/support/update/announcement/2026/suse-su-202622956-1/
Import Source
https://ftp.suse.com/pub/projects/security/osv/SUSE-SU-2026:22956-1.json
JSON Data
https://api.osv.dev/v1/vulns/SUSE-SU-2026:22956-1
Upstream
CVE (9)
Related
CVE (9)
Published
2026-07-25T17:15:12Z
Modified
2026-07-29T18:24:23Z
Summary
Security update for libssh
Details

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)
References

Affected packages

SUSE:Linux Enterprise Server 16.0 / libssh

Package

Name
libssh
Purl
pkg:rpm/suse/libssh&distro=SUSE%20Linux%20Enterprise%20Server%2016.0

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
0.11.5-160000.1.1

Ecosystem specific 

{
    "binaries":  [
        {
            "libssh-config":  "0.11.5-160000.1.1",
            "libssh-devel":  "0.11.5-160000.1.1",
            "libssh4":  "0.11.5-160000.1.1"
        }
    ]
}

Database specific

source 
"https://ftp.suse.com/pub/projects/security/osv/SUSE-SU-2026:22956-1.json"

SUSE:Linux Enterprise Server for SAP applications 16.0 / libssh

Package

Name
libssh
Purl
pkg:rpm/suse/libssh&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20applications%2016.0

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
0.11.5-160000.1.1

Ecosystem specific 

{
    "binaries":  [
        {
            "libssh-config":  "0.11.5-160000.1.1",
            "libssh-devel":  "0.11.5-160000.1.1",
            "libssh4":  "0.11.5-160000.1.1"
        }
    ]
}

Database specific

source 
"https://ftp.suse.com/pub/projects/security/osv/SUSE-SU-2026:22956-1.json"