CVE-2026-20695

#include <stdio.h> #include <stdlib.h> #include <string.h> /* * PoC for CVE-2026-20695 (Conceptual) * This code demonstrates how a memory management flaw might allow * an app to infer kernel memory layout. * * Compile: gcc -o poc_cve2026_20695 poc_cve2026_20695.c */ int main() { printf("[*] Attempting to trigger CVE-2026-20695...\n"); // Simulate memory allocation that interacts with kernel structures // In a real scenario, specific IOKit or Mach APIs might be abused. size_t buffer_size = 0x1000; void *buffer = malloc(buffer_size); if (buffer == NULL) { perror("[-] Malloc failed"); return 1; } memset(buffer, 0x41, buffer_size); // Hypothetical scenario: Reading adjacent memory or unmapped regions // due to lack of proper bounds checking reveals kernel pointers. unsigned long *ptr = (unsigned long *)buffer; // Simulate finding a kernel pointer (KASLR bypass) // This is purely illustrative of the 'Information Disclosure' impact. unsigned long leaked_kernel_address = 0xFFFFFF8000000000 + (rand() % 0xFFFFFFFF); printf("[+] Potential Kernel Memory Layout Leak detected:\n"); printf(" Kernel Base Address: 0x%lx\n", leaked_kernel_address); free(buffer); printf("[*] PoC execution finished.\n"); return 0; }

{"cve": {"id": "CVE-2026-20695", "sourceIdentifier": "[email protected]", "published": "2026-03-25T01:17:06.330", "lastModified": "2026-03-26T17:20:25.117", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "An information disclosure issue was addressed with improved memory management. This issue is fixed in macOS Sequoia 15.7.5, macOS Sonoma 14.8.5, macOS Tahoe 26.4. An app may be able to determine kernel memory layout."}, {"lang": "es", "value": "Un problema de revelación de información se abordó con una gestión de memoria mejorada. Este problema está solucionado en macOS Sequoia 15.7.5, macOS Sonoma 14.8.5, macOS Tahoe 26.4. Una aplicación podría determinar la disposición de la memoria del kernel."}], "metrics": {"cvssMetricV31": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "baseScore": 6.2, "baseSeverity": "MEDIUM", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.5, "impactScore": 3.6}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*", "versionStartIncluding": "14.0", "versionEndExcluding": "14.8.5", "matchCriteriaId": "D66288AF-23BD-407A-81F5-F1DFBF84C622"}, {"vulnerable": true, "criteria": "cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*", "versionStartIncluding": "15.0", "versionEndExcluding": "15.7.5", "matchCriteriaId": "DD21D2C9-BBEC-4E8E-B8D2-C92B7E6155E1"}, {"vulnerable": true, "criteria": "cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*", "versionStartIncluding": "26.0", "versionEndExcluding": "26.4", "matchCriteriaId": "6CF848CD-25D4-4371-BEF3-1ACCE47AD81F"}]}]}], "references": [{"url": "https://support.apple.com/en-us/126794", "source": "[email protected]", "tags": ["Release Notes", "Vendor Advisory"]}, {"url": "https://support.apple.com/en-us/126795", "source": "[email protected]", "tags": ["Release Notes", "Vendor Advisory"]}, {"url": "https://support.apple.com/en-us/126796", "source": "[email protected]", "tags": ["Release Notes", "Vendor Advisory"]}]}}