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DEBIAN-CVE-2026-7837

Type: advisorySource: OSV1 source record

A time-of-check time-of-use (TOCTOU) condition in the ad_flush function in Netatalk 3.0.0 through 4.4.2 involves root-privileged file operations, which may allow a remote attacker to cause limited data modification under specific race conditions.

Announced Source revision 1
Original source ↗

DEBIAN-CVE-2026-7837

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-2026-7837

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

4.2.3~ds-1+deb13u2

Source reference: /affected/0/versions

4.2.3~ds-2

Source reference: /affected/0/versions

4.2.3~ds-2.1

Source reference: /affected/0/versions

4.4.1~ds-1

Source reference: /affected/0/versions

4.4.2~ds-1

Source reference: /affected/0/versions

4.4.3~ds-1

Source reference: /affected/0/versions

4.5.0~ds-1

Source reference: /affected/0/versions

4.5.0~ds-2

Source reference: /affected/0/versions

4.5.0~ds-3

Source reference: /affected/0/versions

4.5.1~ds-1

Source reference: /affected/0/versions

Fixed versions
Not stated in this record
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

4.4.3~ds-1

Source reference: /affected/1/versions

Fixed versions
4.5.0~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"
          }
        ]
      }
    ],
    "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",
      "4.2.3~ds-1+deb13u2",
      "4.2.3~ds-2",
      "4.2.3~ds-2.1",
      "4.4.1~ds-1",
      "4.4.2~ds-1",
      "4.4.3~ds-1",
      "4.5.0~ds-1",
      "4.5.0~ds-2",
      "4.5.0~ds-3",
      "4.5.1~ds-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-7837.json"
    },
    "ecosystem_specific": {
      "urgency": "unimportant"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "4.5.0~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",
      "4.4.3~ds-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-7837.json"
    },
    "ecosystem_specific": {
      "urgency": "unimportant"
    }
  }
]

Publisher severity

No explicit severity was provided.

Event
#58473 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement