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{"bugzilla": {"description": "Oj: Use-After-Free in Oj::Parser SAJ Long Key Callback", "id": "2495920", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2495920"}, "csaw": false, "details": ["Oj (Optimized JSON) is a JSON parser and Object marshaller packaged as a Ruby gem. Prior to version 3.17.2, is vulnerable to Use-After-Free when in SAJ mode. The Oj::Parser does not protect cached object keys (\u2265 35 bytes) from garbage collection, and a Ruby callback that triggers GC inside hash_end can cause the key string to be reclaimed while the C parser still holds a pointer to it. The subsequent access to the freed string VALUE results in a segfault, confirmed by an RIP pointing to address 0x4242 (a canary-style pattern suggesting control over the freed memory's content). This issue has been fixed in version 3.17.2."], "name": "CVE-2026-54902", "public_date": "2026-06-30T23:40:32Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-54902\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-54902\nhttps://github.com/ohler55/oj/security/advisories/GHSA-m578-w5vf-rfcm"], "statement": "Red Hat's only product shipping the Oj Ruby gem (Compliance Backend) already includes version 3.17.3, which contains the fix for this vulnerability. No Red Hat products are affected.", "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,3.17.2)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "manual", "scores": [{"score": 100.0, "source": "manual"}]}, "original": {"product": "oj", "source": "cna", "vendor": "ohler55"}, "product": "oj", "vendor": "ohler"}], "created": "2026-07-01T03:15:15.526471+00:00", "updated": "2026-07-06T22:48:50.074827+00:00", "vendors": ["ohler", "ohler$PRODUCT$oj"]}