{"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"}}}}