{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-47738", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-05-19T22:16:39.503Z", "datePublished": "2026-11-06T21:23:45.399Z", "dateUpdated": "2026-11-06T21:23:45.399Z"}, "containers": {"cna": {"title": "liboqs: Uninitialized function-pointer dereference in OQS_KEM_encaps_derand for NTRU KEMs", "problemTypes": [{"descriptions": [{"cweId": "CWE-824", "lang": "en", "description": "CWE-824: Access of Uninitialized Pointer", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L", "version": "3.1"}}], "references": [{"name": "https://github.com/open-quantum-safe/liboqs/security/advisories/GHSA-jr5q-r9qx-v738", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/open-quantum-safe/liboqs/security/advisories/GHSA-jr5q-r9qx-v738"}, {"name": "https://github.com/open-quantum-safe/liboqs/pull/2460", "tags": ["x_refsource_MISC"], "url": "https://github.com/open-quantum-safe/liboqs/pull/2460"}, {"name": "https://github.com/open-quantum-safe/liboqs/commit/80ceff0207658eba98bae8eb22ca3aa2a364f40b", "tags": ["x_refsource_MISC"], "url": "https://github.com/open-quantum-safe/liboqs/commit/80ceff0207658eba98bae8eb22ca3aa2a364f40b"}, {"name": "https://github.com/open-quantum-safe/liboqs/releases/tag/0.16.0", "tags": ["x_refsource_MISC"], "url": "https://github.com/open-quantum-safe/liboqs/releases/tag/0.16.0"}], "affected": [{"vendor": "open-quantum-safe", "product": "liboqs", "versions": [{"version": "< 0.16.0", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-11-06T21:23:45.399Z"}, "descriptions": [{"lang": "en", "value": "liboqs is a C-language cryptographic library that provides implementations of post-quantum cryptography algorithms. Prior to 0.16.0, OQS_KEM_encaps_derand can dereference an uninitialized encaps_derand function pointer when called on NTRU-HPS-2048-509, NTRU-HPS-2048-677, NTRU-HPS-4096-821, NTRU-HPS-4096-1229, NTRU-HRSS-701, or NTRU-HRSS-1373. The affected NTRU constructors omit the OQS_KEM.encaps_derand member because those schemes do not support derandomized encapsulation, OQS_KEM objects are allocated without zero initialization, and the wrapper in src/kem/kem.c checks only that the OQS_KEM pointer is non-null before calling through the residual heap value. An application is affected only if it instantiates one of those six NTRU KEMs and invokes OQS_KEM_encaps_derand on it. The supported impact is a calling-process crash and denial of service. This issue is fixed in version 0.16.0."}], "source": {"advisory": "GHSA-jr5q-r9qx-v738", "discovery": "UNKNOWN"}}}}

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