DEBIAN-CVE-2026-54903
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.
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/versions3.16.15-1Source reference:
/affected/2/versions3.16.16-1Source reference:
/affected/2/versions3.16.3-1Source reference:
/affected/2/versions3.17.0-1Source reference:
/affected/2/versions3.17.1-1Source 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
- Added to Heist Feed
- Publisher date