CVE-2026-28897

#include <stdio.h> #include <string.h> #include <stdlib.h> /* * Conceptual Proof of Concept (PoC) for CVE-2026-28897 * This C code simulates a kernel buffer overflow scenario. * Compile: gcc -o poc_exploit poc_exploit.c * Usage: ./poc_exploit <payload_string> */ void simulate_vulnerable_kernel_copy(char *user_input) { // Simulate a fixed-size kernel buffer char kernel_buffer[64]; // VULNERABILITY: The code copies user input into the kernel buffer // without checking if the input size exceeds the buffer capacity. // This mimics the lack of input validation mentioned in the CVE description. strcpy(kernel_buffer, user_input); printf("[Kernel] Data processed: %s\n", kernel_buffer); } int main(int argc, char *argv[]) { if (argc < 2) { printf("Usage: %s <payload>\n", argv[0]); printf("Example: %s AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\n", argv[0]); return 1; } char *malicious_payload = argv[1]; printf("[PoC] Attempting to trigger buffer overflow...\n"); // Trigger the vulnerable function simulate_vulnerable_kernel_copy(malicious_payload); printf("[PoC] Execution completed. If the payload was too long, a crash may have occurred.\n"); return 0; }

{"cve": {"id": "CVE-2026-28897", "sourceIdentifier": "[email protected]", "published": "2026-05-11T21:18:52.803", "lastModified": "2026-05-12T17:27:58.013", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "A buffer overflow was addressed with improved input validation. This issue is fixed in iOS 18.7.9 and iPadOS 18.7.9, iOS 26.5 and iPadOS 26.5, macOS Sequoia 15.7.7, macOS Sonoma 14.8.7, macOS Tahoe 26.5, tvOS 26.5, visionOS 26.5, watchOS 26.5. A local user may be able to cause unexpected system termination or read kernel memory."}], "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:N/I:N/A:H", "baseScore": 6.2, "baseSeverity": "MEDIUM", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH"}, "exploitabilityScore": 2.5, "impactScore": 3.6}]}, "weaknesses": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-121"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*", "versionEndExcluding": "18.7.9", "matchCriteriaId": "F3968B76-E6DE-416D-A0FB-E4833FFAAE0F"}, {"vulnerable": true, "criteria": "cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*", "versionStartIncluding": "26.0", "versionEndExcluding": "26.5", "matchCriteriaId": "20644D7E-2AB6-48CA-AED4-C474A9867986"}, {"vulnerable": true, "criteria": "cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*", "versionEndExcluding": "18.7.9", "matchCriteriaId": "B6431EAF-B395-4C19-9AB6-A2F45991C897"}, {"vulnerable": true, "criteria": "cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*", "versionStartIncluding": "26.0", "versionEndExcluding": "26.5", "matchCriteriaId": "1BE54A3B-D667-43BA-AB71-BCF8438054E0"}, {"vulnerable": true, "criteria": "cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*", "versionStartIncluding": "14.0", "versionEndExcluding": "14.8.7", "matchCriteriaId": "DD9E7FAE-30DA-4B2B-A63A-6DFEA7A29933"}, {"vulnerable": true, "criteria": "cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*", "versionStartIncluding": "15.0", "versionEndExcluding": "15.7.7", "matchCriteriaId": "2984C440-3DC2-413A-B5FA-1FAB21078DB8"}, {"vulnerable": true, "criteria": "cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*", "versionStartIncluding": "26.0", "versionEndExcluding": "26.5", "matchCriteriaId": "6CB91417-90A8-4A9B-A1D0-1D94B80EF837"}, {"vulnerable": true, "criteria": "cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*", "versionEndExcluding": "26.5", "matchCriteriaId": "176C47FD-FA25-437B-9061-A81CAA367AEF"}, {"vulnerable": true, "criteria": "cpe:2.3:o:apple:visionos:*:*:*:*:*:*:*:*", "versionEndExcluding": "26.5", "matchCriteriaId": "C8F45D80-0DF8-444E-9AF1-703A1075F046"}, {"vulnerable": true, "criteria": "cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*", "versionEndExcluding": "26.5", "matchCriteriaId": "057B244F-5485-4108-8E23-FE15F5256EE7"}]}]}], "references": [{"url": "https://support.apple.com/en-us/127110", "source": "[email protected]", "tags": ["Release Notes", "Vendor Advisory"]}, {"url": "https://support.apple.com/en-us/127111", "source": "[email protected]", "tags": ["Release Notes", "Vendor Advisory"]}, {"url": "https://support.apple.com/en-us/127115", "source": "[email protected]", "tags": ["Release Notes", "Vendor Advisory"]}, {"url": "https://support.apple.com/en-us/127116", "source": "[email protected]", "tags": ["Release Notes", "Vendor Advisory"]}, {"url": "https://support.apple.com/en-us/127117", "source": "[email protected]", "tags": ["Release Notes", "Vendor Advisory"]}, {"url": "https://support.apple.com/en-us/127118", "source": "[email protected]", "tags": ["Release Notes", "Vendor Advisory"]}, {"url": "https://support.apple.com/en-us/127119", "source": "[email protected]", "tags": ["Release Notes", "Vendor Advisory"]}, {"url": "https://support.apple.com/en-us/127120", "source": "[email protected]", "tags": ["Release Notes", "Vendor Advisory"]}]}}