CVE-2026-40449

/* * PoC for CVE-2026-40449 * Demonstrates triggering integer overflow by creating large tensor dimensions. */ #include <stdio.h> #include <stdint.h> // Simulating the vulnerable buffer size calculation void simulate_vulnerable_calc(size_t dim_a, size_t dim_b, size_t elem_size) { printf("Calculating buffer size for dims: %zu x %zu, elem_size: %zu\n", dim_a, dim_b, elem_size); // Vulnerable calculation: potential overflow here size_t required_size = dim_a * dim_b * elem_size; printf("Calculated required size: %zu\n", required_size); if (required_size < dim_a) { // Simple check for overflow printf("[!] Integer Overflow detected! Size wrapped around.\n"); } else { printf("[+] Size seems valid (may still be vulnerable depending on allocation logic).\n"); } } int main() { // Dimensions chosen to trigger 32-bit or 64-bit overflow depending on arch size_t large_dim = 0x100000000; size_t elem_size = 4; // e.g., float32 simulate_vulnerable_calc(large_dim, large_dim, elem_size); return 0; }

{"cve": {"id": "CVE-2026-40449", "sourceIdentifier": "[email protected]", "published": "2026-04-22T07:16:13.450", "lastModified": "2026-04-27T18:21:02.313", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Integer overflow in buffer size calculation could result in out of bounds memory access when handling large tensors in Samsung Open Source ONE.\nAffected version is prior to commit 1.30.0."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H", "baseScore": 6.6, "baseSeverity": "MEDIUM", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.8, "impactScore": 4.7}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-190"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:samsung:one:*:*:*:*:*:*:*:*", "versionEndExcluding": "1.30.0", "matchCriteriaId": "4DBBA2E4-036F-40C0-B2EF-D14AB3C83B6E"}]}]}], "references": [{"url": "https://github.com/Samsung/ONE/pull/16481", "source": "[email protected]", "tags": ["Issue Tracking", "Patch"]}]}}