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DEBIAN-CVE-2026-45698

Type: advisorySource: OSV1 source record

Netatalk is a Free and Open Source file server suite for Unix-like operating systems. In versions 3.1.19 through 4.4.2, a stack-based buffer overflow exists in the deletedir() function of Netatalk's afpd daemon due to an integer underflow in the calculation of the remaining buffer size used for path construction. deletedir() is a utility function called when a file operation crosses a device boundary inside an AFP shared volume, which the standard library's renameat() cannot handle. The function attempts to prevent buffer overflows by tracking available space in a size_t remain variable. However, the arithmetic used to compute remain results in an unsigned integer underflow, causing the variable to become SIZE_MAX. Because of this, the subsequent boundary check always evaluates as safe, allowing an unbounded strcpy() operation to copy attacker-controlled filenames into a nearly full stack buffer. Version 4.4.3 patches the issue.

Announced Source revision 1
Original source ↗

DEBIAN-CVE-2026-45698

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-2026-45698

netatalk

Source reference: /affected/0/package/name

Affected versions
4.2.3~ds-1

Source reference: /affected/0/versions

4.2.3~ds-1+deb13u1

Source reference: /affected/0/versions

Fixed versions
4.2.3~ds-1+deb13u2

Source reference: /affected/0/ranges

Prerequisites
Not stated in this record

netatalk

Source reference: /affected/1/package/name

Affected versions
4.2.3~ds-1

Source reference: /affected/1/versions

4.2.3~ds-2

Source reference: /affected/1/versions

4.2.3~ds-2.1

Source reference: /affected/1/versions

4.4.1~ds-1

Source reference: /affected/1/versions

4.4.2~ds-1

Source reference: /affected/1/versions

Fixed versions
4.4.3~ds-1

Source reference: /affected/1/ranges

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"
          },
          {
            "fixed": "4.2.3~ds-1+deb13u2"
          }
        ]
      }
    ],
    "package": {
      "name": "netatalk",
      "purl": "pkg:deb/debian/netatalk?arch=source&distro=trixie",
      "ecosystem": "Debian:13"
    },
    "versions": [
      "4.2.3~ds-1",
      "4.2.3~ds-1+deb13u1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-45698.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "4.4.3~ds-1"
          }
        ]
      }
    ],
    "package": {
      "name": "netatalk",
      "purl": "pkg:deb/debian/netatalk?arch=source&distro=forky",
      "ecosystem": "Debian:14"
    },
    "versions": [
      "4.2.3~ds-1",
      "4.2.3~ds-2",
      "4.2.3~ds-2.1",
      "4.4.1~ds-1",
      "4.4.2~ds-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-45698.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  }
]

Publisher severity

No explicit severity was provided.

Event
#57090 · Revision 1
Added to Heist Feed
Publisher date
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