CVE-2026-41665

// PoC Concept for Integer Overflow in Buffer Size Calculation // This simulates the overflow in scratch buffer initialization #include <stdio.h> #include <stdlib.h> #include <stdint.h> void simulate_tensor_allocation(size_t dim_x, size_t dim_y, size_t elem_size) { // Vulnerability: Integer overflow in size calculation // If dim_x * dim_y is very large, 'total_size' wraps around size_t total_size = dim_x * dim_y * elem_size; printf("Allocating buffer of size: %zu\n", total_size); // Allocation based on incorrect (small) size void *buffer = malloc(total_size); if (!buffer) { perror("malloc failed"); return; } // Initialization loop uses original dimensions, leading to overflow // In real scenario, this would be a memset or initialization loop printf("Initializing buffer based on original dimensions...\n"); for (size_t i = 0; i < dim_x; i++) { for (size_t j = 0; j < dim_y; j++) { // Calculate index to write size_t offset = (i * dim_y + j) * elem_size; // This write will overflow the allocated buffer if total_size wrapped around if (offset < total_size) { *((char*)buffer + offset) = 0; } else { printf("Heap corruption detected at index %zu\n", offset); free(buffer); return; } } } free(buffer); } int main() { // Trigger condition: Large intermediate tensors causing multiplication overflow // Example: 0x100000 * 0x10000 on 32-bit systems, or specific large values on 64-bit // that exceed the practical memory limits but wrap around in size_t arithmetic size_t large_dim = 1073741824; // 2^30 size_t another_dim = 2; size_t size_of_element = 4; // e.g., float printf("Attempting to trigger CVE-2026-41665 scenario...\n"); simulate_tensor_allocation(large_dim, another_dim, size_of_element); return 0; }

{"cve": {"id": "CVE-2026-41665", "sourceIdentifier": "[email protected]", "published": "2026-04-22T07:16:13.763", "lastModified": "2026-04-27T18:21:39.640", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Integer overflow in scratch buffer initialization size calculation in Samsung Open Source ONE cause incorrect memory initialization for large intermediate tensors.\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:N/I:L/A:H", "baseScore": 6.1, "baseSeverity": "MEDIUM", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.8, "impactScore": 4.2}]}, "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"]}]}}