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DEBIAN-CVE-2026-54903

Type: advisorySource: OSV1 source record

Oj (Optimized JSON) is a JSON parser and Object marshaller packaged as a Ruby gem. In versions prior to 3.17.2, Oj.load is vulnerable to heap corruption when parsing a JSON string longer than 2 GB. An integer overflow in buf_append_string (buf.h:61) converts the string length to a large negative size_t, causing memcpy to copy an astronomically large amount of data out of bounds. This crashes the process and can corrupt adjacent heap memory. The issue has been fixed in version 3.17.2.

Announced Source revision 1
Original source ↗

DEBIAN-CVE-2026-54903

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-2026-54903

ruby-oj

Source reference: /affected/0/package/name

Affected versions
3.14.2-1

Source reference: /affected/0/versions

Fixed versions
3.14.2-1+deb12u1

Source reference: /affected/0/ranges

Prerequisites
Not stated in this record

ruby-oj

Source reference: /affected/1/package/name

Affected versions
3.16.3-1

Source reference: /affected/1/versions

Fixed versions
3.16.3-1+deb13u1

Source reference: /affected/1/ranges

Prerequisites
Not stated in this record

ruby-oj

Source reference: /affected/2/package/name

Affected versions
3.16.12-1

Source reference: /affected/2/versions

3.16.15-1

Source reference: /affected/2/versions

3.16.16-1

Source reference: /affected/2/versions

3.16.3-1

Source reference: /affected/2/versions

3.17.0-1

Source reference: /affected/2/versions

3.17.1-1

Source reference: /affected/2/versions

Fixed versions
3.17.3-1

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"
          },
          {
            "fixed": "3.14.2-1+deb12u1"
          }
        ]
      }
    ],
    "package": {
      "name": "ruby-oj",
      "purl": "pkg:deb/debian/ruby-oj?arch=source&distro=bookworm",
      "ecosystem": "Debian:12"
    },
    "versions": [
      "3.14.2-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-54903.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "3.16.3-1+deb13u1"
          }
        ]
      }
    ],
    "package": {
      "name": "ruby-oj",
      "purl": "pkg:deb/debian/ruby-oj?arch=source&distro=trixie",
      "ecosystem": "Debian:13"
    },
    "versions": [
      "3.16.3-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-54903.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "3.17.3-1"
          }
        ]
      }
    ],
    "package": {
      "name": "ruby-oj",
      "purl": "pkg:deb/debian/ruby-oj?arch=source&distro=forky",
      "ecosystem": "Debian:14"
    },
    "versions": [
      "3.16.12-1",
      "3.16.15-1",
      "3.16.16-1",
      "3.16.3-1",
      "3.17.0-1",
      "3.17.1-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-54903.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  }
]

Publisher severity

No explicit severity was provided.

Event
#57849 · Revision 1
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Publisher date
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