DEBIAN-CVE-2026-54500

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Source
https://security-tracker.debian.org/tracker/CVE-2026-54500
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-54500.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-54500
Upstream
Published
2026-07-01T00:16:32.147Z
Modified
2026-07-02T17:00:26.909896601Z
Severity
  • 5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N CVSS Calculator
Summary
[none]
Details

Oj (Optimized JSON) is a JSON parser and Object marshaller packaged as a Ruby gem. In versions prior to 3.17.3, Oj.load in :object mode reads uninitialized stack memory (and, for long keys, reads out of bounds) when parsing a JSON object whose key is 254 bytes or longer. The interned bytes can surface to the caller, disclosing process stack memory. In ext/oj/intern.c, formattr() handles the long-key path by allocating a heap buffer, b, populating it with the attribute name, and then freeing it — but it passed the uninitialized stack buffer buf (not b) to rbintern3(). rb_intern3 therefore reads len + 1 bytes of uninitialized stack memory. When the key length is >= 256, it also reads out of bounds past the 256-byte buf. The resulting bytes are interned and can reach the caller via the produced Symbol or via the EncodingError message raised on invalid UTF-8, leaking process stack contents. This issue has been fixed in version 3.17.3.

References

Affected packages

Debian:11 / ruby-oj

Package

Name
ruby-oj
Purl
pkg:deb/debian/ruby-oj?arch=source&distro=bullseye

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

3.*
3.11.0-1
3.13.3-1
3.13.7-1
3.13.9-1
3.13.9-2
3.13.9-3
3.13.19-1
3.13.21-1
3.13.23-1
3.13.23-2
3.13.23-3
3.14.1-1
3.14.1-2
3.14.1-3
3.14.2-1
3.15.0-1
3.16.0-1
3.16.1-1
3.16.3-1
3.16.12-1
3.16.15-1
3.16.16-1
3.17.0-1
3.17.1-1
3.17.3-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-54500.json"

Debian:12 / ruby-oj

Package

Name
ruby-oj
Purl
pkg:deb/debian/ruby-oj?arch=source&distro=bookworm

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

3.*
3.14.2-1
3.15.0-1
3.16.0-1
3.16.1-1
3.16.3-1
3.16.12-1
3.16.15-1
3.16.16-1
3.17.0-1
3.17.1-1
3.17.3-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-54500.json"

Debian:13 / ruby-oj

Package

Name
ruby-oj
Purl
pkg:deb/debian/ruby-oj?arch=source&distro=trixie

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

3.*
3.16.3-1
3.16.12-1
3.16.15-1
3.16.16-1
3.17.0-1
3.17.1-1
3.17.3-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-54500.json"

Debian:14 / ruby-oj

Package

Name
ruby-oj
Purl
pkg:deb/debian/ruby-oj?arch=source&distro=forky

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.17.3-1

Affected versions

3.*
3.16.3-1
3.16.12-1
3.16.15-1
3.16.16-1
3.17.0-1
3.17.1-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-54500.json"