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DEBIAN-CVE-2026-90557

Type: advisorySource: OSV1 source record

Freeciv versions 3.1.0 through 3.2.5 contain an out-of-bounds read vulnerability in sg_load_player_unit() when processing savegame files with invalid unit activity indices. An attacker can craft a malicious savegame file with an out-of-range activity index that bypasses bounds checking and causes a crash or limited heap memory exposure when loaded.

Announced Source revision 1
Original source ↗

DEBIAN-CVE-2026-90557

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-2026-90557

freeciv

Source reference: /affected/0/package/name

Affected versions
3.0.6-1

Source reference: /affected/0/versions

3.0.6-1+deb12u1

Source reference: /affected/0/versions

3.0.8-1

Source reference: /affected/0/versions

3.0.8-2

Source reference: /affected/0/versions

3.1.0+ds-1

Source reference: /affected/0/versions

3.1.1+ds-1

Source reference: /affected/0/versions

3.1.2+ds-1

Source reference: /affected/0/versions

3.1.2+ds-2

Source reference: /affected/0/versions

3.1.2+ds-2~exp1

Source reference: /affected/0/versions

3.1.4+ds-1

Source reference: /affected/0/versions

3.1.4+ds-2

Source reference: /affected/0/versions

3.2.0+ds-1

Source reference: /affected/0/versions

3.2.1+ds-1

Source reference: /affected/0/versions

3.2.1+ds-2

Source reference: /affected/0/versions

3.2.2+ds-1

Source reference: /affected/0/versions

3.2.4+ds-1

Source reference: /affected/0/versions

3.2.5+ds-1

Source reference: /affected/0/versions

3.2.6+ds-1

Source reference: /affected/0/versions

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

freeciv

Source reference: /affected/1/package/name

Affected versions
3.1.4+ds-2

Source reference: /affected/1/versions

3.1.4+ds-2+deb13u1

Source reference: /affected/1/versions

3.2.0+ds-1

Source reference: /affected/1/versions

3.2.1+ds-1

Source reference: /affected/1/versions

3.2.1+ds-2

Source reference: /affected/1/versions

3.2.2+ds-1

Source reference: /affected/1/versions

3.2.4+ds-1

Source reference: /affected/1/versions

3.2.5+ds-1

Source reference: /affected/1/versions

3.2.6+ds-1

Source reference: /affected/1/versions

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

freeciv

Source reference: /affected/2/package/name

Affected versions
3.1.4+ds-2

Source reference: /affected/2/versions

3.2.0+ds-1

Source reference: /affected/2/versions

3.2.1+ds-1

Source reference: /affected/2/versions

3.2.1+ds-2

Source reference: /affected/2/versions

3.2.2+ds-1

Source reference: /affected/2/versions

3.2.4+ds-1

Source reference: /affected/2/versions

3.2.5+ds-1

Source reference: /affected/2/versions

Fixed versions
3.2.6+ds-1

Source reference: /affected/2/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": "freeciv",
      "purl": "pkg:deb/debian/freeciv?arch=source&distro=bookworm",
      "ecosystem": "Debian:12"
    },
    "versions": [
      "3.0.6-1",
      "3.0.6-1+deb12u1",
      "3.0.8-1",
      "3.0.8-2",
      "3.1.0+ds-1",
      "3.1.1+ds-1",
      "3.1.2+ds-1",
      "3.1.2+ds-2",
      "3.1.2+ds-2~exp1",
      "3.1.4+ds-1",
      "3.1.4+ds-2",
      "3.2.0+ds-1",
      "3.2.1+ds-1",
      "3.2.1+ds-2",
      "3.2.2+ds-1",
      "3.2.4+ds-1",
      "3.2.5+ds-1",
      "3.2.6+ds-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-90557.json"
    },
    "ecosystem_specific": {
      "urgency": "unimportant"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "freeciv",
      "purl": "pkg:deb/debian/freeciv?arch=source&distro=trixie",
      "ecosystem": "Debian:13"
    },
    "versions": [
      "3.1.4+ds-2",
      "3.1.4+ds-2+deb13u1",
      "3.2.0+ds-1",
      "3.2.1+ds-1",
      "3.2.1+ds-2",
      "3.2.2+ds-1",
      "3.2.4+ds-1",
      "3.2.5+ds-1",
      "3.2.6+ds-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-90557.json"
    },
    "ecosystem_specific": {
      "urgency": "unimportant"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "3.2.6+ds-1"
          }
        ]
      }
    ],
    "package": {
      "name": "freeciv",
      "purl": "pkg:deb/debian/freeciv?arch=source&distro=forky",
      "ecosystem": "Debian:14"
    },
    "versions": [
      "3.1.4+ds-2",
      "3.2.0+ds-1",
      "3.2.1+ds-1",
      "3.2.1+ds-2",
      "3.2.2+ds-1",
      "3.2.4+ds-1",
      "3.2.5+ds-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-90557.json"
    },
    "ecosystem_specific": {
      "urgency": "unimportant"
    }
  }
]

Publisher severity

No explicit severity was provided.

Event
#6072 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement