CVE-2026-34861

Description

Race condition vulnerability in the thermal management module. Impact: Successful exploitation of this vulnerability may affect availability.

CVSS Details

CVSS Score

6.3

Severity

MEDIUM

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:H

Configurations (Affected Products)

cpe:2.3:o:huawei:harmonyos:6.0.0:*:*:*:*:*:*:* - VULNERABLE

华为部分设备 (具体受影响型号请参考2026年4月安全公告)

PoC / Exploit Code

⚠ For Security Research Only

The following code is for security research and authorized testing only.

python

#include <pthread.h>
#include <stdio.h>
#include <unistd.h>

// Simulated shared resource in thermal driver
int thermal_state = 0;

// Malicious thread trying to exploit race condition
void* malicious_thread(void* arg) {
    while(1) {
        // Attempt to modify state during critical section
        thermal_state = 999;
        printf("[Malicious] State corrupted to %d\n", thermal_state);
        usleep(100); 
    }
}

// Simulated thermal manager thread
void* thermal_manager_thread(void* arg) {
    while(1) {
        // Critical Section: Check-Then-Act
        if (thermal_state == 0) {
            printf("[Manager] Normal operation. Cooling active.\n");
        } else {
            printf("[Manager] ERROR: Invalid thermal state detected! System may crash.\n");
            // In a real vulnerability, this leads to Availability impact (A:H)
        }
        usleep(100);
    }
}

int main() {
    pthread_t t1, t2;
    
    // Create threads to simulate race condition
    pthread_create(&t1, NULL, malicious_thread, NULL);
    pthread_create(&t2, NULL, thermal_manager_thread, NULL);
    
    pthread_join(t1, NULL);
    pthread_join(t2, NULL);
    return 0;
}

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-34861
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-34861
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-34861/
[4] VulDB https://vuldb.com/cve/CVE-2026-34861
[5] https://consumer.huawei.com/en/support/bulletin/2026/4/
[6] https://consumer.huawei.com/en/support/bulletinwearables/2026/4/

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-34861", "sourceIdentifier": "[email protected]", "published": "2026-04-13T05:16:03.953", "lastModified": "2026-04-15T20:09:19.557", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Race condition vulnerability in the thermal management module.\nImpact: Successful exploitation of this vulnerability may affect availability."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:H", "baseScore": 6.3, "baseSeverity": "MEDIUM", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "HIGH", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 0.8, "impactScore": 5.5}, {"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H", "baseScore": 4.7, "baseSeverity": "MEDIUM", "attackVector": "LOCAL", "attackComplexity": "HIGH", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.0, "impactScore": 3.6}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-362"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:huawei:harmonyos:6.0.0:*:*:*:*:*:*:*", "matchCriteriaId": "0EBE30DD-E146-4A6A-BE68-DEF9D4D0B2A8"}]}]}], "references": [{"url": "https://consumer.huawei.com/en/support/bulletin/2026/4/", "source": "[email protected]", "tags": ["Vendor Advisory"]}, {"url": "https://consumer.huawei.com/en/support/bulletinwearables/2026/4/", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}