{"affected":[{"product":"liboqs","source":"CNA: GitHub_M","vendor":"open-quantum-safe","versions":[{"status":"affected","version":"< 0.16.0"}]}],"cveId":"CVE-2026-47738","cwes":["CWE-824"],"description":"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.","epss":null,"exploits":[],"kev":null,"metrics":[{"score":5.3,"severity":"medium","source":"CNA: GitHub_M","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","version":"3.1"}],"modifiedAt":1794000225399,"publishedAt":1794000225399,"references":[{"source":"CNA: GitHub_M","tags":["x_refsource_CONFIRM"],"url":"https://github.com/open-quantum-safe/liboqs/security/advisories/GHSA-jr5q-r9qx-v738"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/open-quantum-safe/liboqs/pull/2460"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/open-quantum-safe/liboqs/commit/80ceff0207658eba98bae8eb22ca3aa2a364f40b"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/open-quantum-safe/liboqs/releases/tag/0.16.0"}],"remediation":[],"revision":"10dba8abd4739af8669070ab5099a001efc38eb637e068699d71cc18069e9991","sources":[{"modifiedAt":1794000225399,"name":"CNA: GitHub_M","retrievedAt":1794002928721,"url":"https://www.cve.org/CVERecord?id=CVE-2026-47738"}],"ssvc":null,"status":"published","title":"liboqs: Uninitialized function-pointer dereference in OQS_KEM_encaps_derand for NTRU KEMs","updatedAt":1794002928721}