DEBIAN-CVE-2026-54500
- 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
- 2026-07-01T00:16:32Z
- Modified
- 2026-09-14T17:03:43Z
- 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, form_attr() 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 rb_intern3(). 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:12 / ruby-oj
Package
- Name
- ruby-oj
- Purl
- pkg:deb/debian/ruby-oj?arch=source&distro=bookworm
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0 Unknown introduced version / All previous versions are affected
Debian:13 / ruby-oj
Package
- Name
- ruby-oj
- Purl
- pkg:deb/debian/ruby-oj?arch=source&distro=trixie
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0 Unknown introduced version / All previous versions are affected
Debian:14 / ruby-oj
Package
- Name
- ruby-oj
- Purl
- pkg:deb/debian/ruby-oj?arch=source&distro=forky