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DEBIAN-CVE-2026-94029

Type: advisorySource: OSV1 source record

Server-side memory exhaustion in Apache MINA SSHD 1.0.0 to 2.19.0 and 3.0.0-M1 to 3.0.0-M5, component sshd-sftp, in the SFTP v6 check-file-name/check-file-handle extension. Apache MINA SSHD is a Java library for client-side and server-side SSH. Using a very small "block size" (for instance 256, which is the minimum) on a huge file generates many (file size / block size) hashes. The resulting SFTP reply message was accumulated fully in memory server-side, which could, with a suitably large (possibly sparse) file exhaust the server-side memory, taking down the server. Users are recommended to upgrade to version 2.20.0 or 3.0.0-M6, which fix this issue by imposing a maximum limit on the size of the reply. Many SFTP implementations have a general limit on the size of SFTP messages anyway; typically 256kB as in OpenSSH or also in Apache MINA SSHD.

Announced Source revision 1
Original source ↗

DEBIAN-CVE-2026-94029

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: osv:DEBIAN-CVE-2026-94029

libmina-sshd-java

Source reference: /affected/0/package/name

Affected versions
2.13.2-2

Source reference: /affected/0/versions

2.13.2-3

Source reference: /affected/0/versions

Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

libmina-sshd-java

Source reference: /affected/1/package/name

Affected versions
2.13.2-2

Source reference: /affected/1/versions

2.13.2-3

Source reference: /affected/1/versions

Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "libmina-sshd-java",
      "purl": "pkg:deb/debian/libmina-sshd-java?arch=source&distro=trixie",
      "ecosystem": "Debian:13"
    },
    "versions": [
      "2.13.2-2",
      "2.13.2-3"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-94029.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "libmina-sshd-java",
      "purl": "pkg:deb/debian/libmina-sshd-java?arch=source&distro=forky",
      "ecosystem": "Debian:14"
    },
    "versions": [
      "2.13.2-2",
      "2.13.2-3"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-94029.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  }
]

Publisher severity

No explicit severity was provided.

Event
#59303 · Revision 1
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Publisher date
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