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Vulnerabilities

CVE-2021-25394

Critical 🇺🇸 CISA KEV ⚡ Exploit Available
Samsung Mobile Devices Race Condition Vulnerability — Samsung mobile devices contain a race condition vulnerability within the MFC charger driver that leads to a use-after-free allowing for a write gi
Published: Jun 29, 2023  ·  Source: CISA_KEV
CVSS v3
9.0
🔗 NVD Official
📄 Description (English)

Samsung Mobile Devices Race Condition Vulnerability — Samsung mobile devices contain a race condition vulnerability within the MFC charger driver that leads to a use-after-free allowing for a write given a radio privilege is compromised.

🤖 AI Executive Summary

A critical race condition vulnerability in Samsung mobile device MFC charger drivers enables use-after-free exploitation, allowing arbitrary memory writes when radio privileges are compromised. With CVSS 9.0 and publicly available exploits, this poses severe risk to Samsung device users across Saudi Arabia, particularly in government and enterprise environments. Immediate patching is essential to prevent privilege escalation and system compromise.

📄 Description (Arabic)

🤖 AI Intelligence Analysis Analyzed: Apr 20, 2026 06:39
🇸🇦 Saudi Arabia Impact Assessment
High impact on Saudi government agencies (NCA, MISA), military personnel, and enterprise users relying on Samsung devices for secure communications. Banking sector (SAMA-regulated institutions) faces risk if Samsung devices are used for mobile banking or administrative access. Telecom operators (STC, Mobily, Zain) must prioritize patching as this affects their device ecosystems. Healthcare institutions using Samsung devices for patient data access are at elevated risk. The vulnerability's requirement for radio privilege compromise suggests targeted attacks against high-value individuals in government and defense sectors.
🏢 Affected Saudi Sectors
Government and Defense (NCA, MISA, military) Banking and Financial Services (SAMA-regulated) Telecommunications (STC, Mobily, Zain) Healthcare Energy (ARAMCO) Enterprise/Corporate
⚖️ Saudi Risk Score (AI)
8.7
/ 10.0
🔧 Remediation Steps (English)
Immediate Actions:
1. Identify all Samsung devices in your organization and inventory their current firmware versions
2. Disable radio functionality on non-critical devices until patching is complete
3. Restrict physical access to affected devices and implement enhanced monitoring
4. Alert users to avoid untrusted radio signals and networks

Patching Guidance:
1. Check Samsung Security Updates page for your device model and apply latest firmware patches immediately
2. Prioritize patching for government, military, and financial sector devices
3. Implement mandatory device updates through MDM/EMM solutions for enterprise deployments
4. Verify patch installation through firmware version verification tools

Compensating Controls:
1. Deploy network segmentation to isolate affected devices from critical systems
2. Implement strict radio access controls and disable unnecessary radio interfaces
3. Monitor for suspicious memory access patterns and privilege escalation attempts
4. Enable SELinux/Knox security features at maximum enforcement level

Detection Rules:
1. Monitor for unexpected kernel memory access from radio/modem processes
2. Alert on use-after-free patterns in MFC charger driver logs
3. Track privilege escalation attempts from radio context to system context
4. Monitor for abnormal power management driver behavior
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تحديد جميع أجهزة Samsung في المؤسسة وحصر إصدارات البرامج الثابتة الحالية
2. تعطيل وظائف الراديو على الأجهزة غير الحرجة حتى اكتمال التصحيح
3. تقييد الوصول المادي للأجهزة المتأثرة وتنفيذ مراقبة محسّنة
4. تنبيه المستخدمين لتجنب الإشارات والشبكات اللاسلكية غير الموثوقة

إرشادات التصحيح:
1. التحقق من صفحة تحديثات أمان Samsung لطراز جهازك وتطبيق أحدث تصحيحات البرامج الثابتة فوراً
2. إعطاء الأولوية لتصحيح أجهزة القطاع الحكومي والعسكري والمالي
3. تنفيذ تحديثات الأجهزة الإلزامية من خلال حلول MDM/EMM للنشر المؤسسي
4. التحقق من تثبيت التصحيح من خلال أدوات التحقق من إصدار البرامج الثابتة

الضوابط البديلة:
1. نشر تقسيم الشبكة لعزل الأجهزة المتأثرة عن الأنظمة الحرجة
2. تنفيذ ضوابط وصول راديو صارمة وتعطيل الواجهات اللاسلكية غير الضرورية
3. مراقبة محاولات الوصول إلى الذاكرة المريبة وتصعيد الامتيازات
4. تفعيل ميزات أمان SELinux/Knox على مستوى الإنفاذ الأقصى

قواعد الكشف:
1. مراقبة الوصول غير المتوقع لذاكرة النواة من عمليات الراديو/المودم
2. التنبيه على أنماط use-after-free في سجلات برنامج تشغيل MFC
3. تتبع محاولات تصعيد الامتيازات من سياق الراديو إلى سياق النظام
4. مراقبة السلوك غير الطبيعي لبرنامج تشغيل إدارة الطاقة
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
ECC 2024 A.5.1.1 - Information Security Policies (device security requirements) ECC 2024 A.6.2.1 - Access Control (privilege management and radio access) ECC 2024 A.8.2.1 - Asset Management (device inventory and patch tracking) ECC 2024 A.12.6.1 - Technical Vulnerability Management (timely patching)
🔵 SAMA CSF
SAMA CSF ID.AM-2 - Asset Management (device inventory) SAMA CSF PR.IP-3 - Configuration Management (firmware patching) SAMA CSF DE.CM-1 - Detection and Analysis (anomaly detection) SAMA CSF RS.MI-2 - Incident Response (containment of compromised devices)
🟡 ISO 27001:2022
ISO 27001:2022 A.5.1 - Policies for Information Security (device security policy) ISO 27001:2022 A.8.1 - Asset Management (mobile device inventory) ISO 27001:2022 A.8.2 - Information Classification (sensitive data on devices) ISO 27001:2022 A.12.6 - Technical Vulnerability Management (patch management)
🟣 PCI DSS v4.0
PCI DSS 6.2 - Security patches for all system components PCI DSS 11.2 - Vulnerability scanning and patch management
🔗 References & Sources 0
No references.
📦 Affected Products / CPE 1 entries
Samsung:Mobile Devices
📊 CVSS Score
9.0
/ 10.0 — Critical
📋 Quick Facts
Severity Critical
CVSS Score9.0
EPSS0.62%
Exploit ✓ Yes
Patch ✓ Yes
CISA KEV🇺🇸 Yes
KEV Due Date2023-07-20
Published 2023-06-29
Source Feed cisa_kev
Views 1
🇸🇦 Saudi Risk Score
8.7
/ 10.0 — Saudi Risk
Priority: CRITICAL
🏷️ Tags
kev actively-exploited
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