An out-of-bounds read was addressed with improved bounds checking. 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 disclose kernel memory.
The following code is for security research and authorized testing only.
python
#include <stdio.h>
#include <stdlib.h>
/*
* PoC for CVE-2026-28832 (Conceptual)
* This code simulates the trigger condition for the kernel out-of-bounds read.
* Actual exploitation requires targeting the specific vulnerable component in the macOS kernel.
*/
int main() {
printf("[+] Triggering CVE-2026-28832 PoC...\n");
// In a real scenario, this would involve a specific syscall or IOKit client call
// passing a buffer size that exceeds the kernel's allocated buffer.
size_t malicious_size = 0xFFFFFFFF; // Arbitrary large size to trigger OOB
void *buffer = malloc(malicious_size);
if (!buffer) {
printf("[-] Memory allocation failed (expected in simulation)\n");
return 1;
}
// Simulate the interaction that leads to the kernel reading past its bounds
// perform_vulnerable_syscall(buffer, malicious_size);
printf("[+] If vulnerable, kernel memory disclosure would occur here.\n");
free(buffer);
return 0;
}