📄 Description (English)
Memory Corruption when using deprecated DMABUF IOCTL calls to manage video memory.
🤖 AI Executive Summary
CVE-2026-21380 is a high-severity memory corruption vulnerability (CVSS 7.8) affecting multiple Qualcomm firmware components through deprecated DMABUF IOCTL calls used for video memory management. The vulnerability could allow local attackers to corrupt kernel memory, potentially leading to privilege escalation or denial of service. No patch is currently available, requiring immediate compensating controls and monitoring.
📄 Description (Arabic)
🤖 AI Intelligence Analysis Analyzed: Apr 28, 2026 22:03
🇸🇦 Saudi Arabia Impact Assessment
This vulnerability primarily impacts Saudi telecommunications sector (STC, Mobily, Zain) and government entities using Qualcomm-based mobile devices and IoT infrastructure. Banking sector (SAMA-regulated institutions) faces risk through mobile banking applications and employee devices. Healthcare organizations using Qualcomm-based medical devices and telemedicine platforms are at moderate risk. Energy sector (ARAMCO) and critical infrastructure relying on Qualcomm wireless connectivity (FastConnect 6900/7800) face potential supply chain compromise. Government agencies (NCA, NCSC) managing classified communications on affected devices require immediate assessment.
🏢 Affected Saudi Sectors
Telecommunications (STC, Mobily, Zain)
Banking and Financial Services (SAMA-regulated)
Government and Defense (NCA, NCSC)
Healthcare (medical devices, telemedicine)
Energy (ARAMCO, critical infrastructure)
IoT and Smart City Infrastructure
🎯 MITRE ATT&CK Techniques
T1548 - Abuse Elevation Control Mechanism (privilege escalation via memory corruption)
T1499 - Endpoint Denial of Service (kernel panic/crash)
T1203 - Exploitation for Client Execution (local code execution)
T1562 - Impair Defenses (bypass kernel protections)
T1040 - Traffic Capture (potential memory disclosure)
⚖️ Saudi Risk Score (AI)
7.2
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Inventory all devices using affected Qualcomm firmware (Cologne, FastConnect 6900/7800, SC8380XP, Snapdragon AR1, WCD series audio codecs, WSA8830)
2. Restrict local access to DMABUF IOCTL interfaces through SELinux/AppArmor policies
3. Disable deprecated DMABUF IOCTL calls if functionality permits via kernel module parameters
4. Implement kernel address space layout randomization (KASLR) and stack canaries
PATCHING GUIDANCE:
- Monitor Qualcomm security bulletins and Linux kernel mailing lists for patch availability
- Prepare firmware update procedures for affected devices once patches released
- Prioritize updates for devices in critical infrastructure and financial services
COMPENSATING CONTROLS:
1. Deploy mandatory access controls restricting unprivileged process access to /dev/dri/* and /dev/ion devices
2. Implement kernel module signing and secure boot to prevent unauthorized driver loading
3. Enable audit logging for all IOCTL calls to /dev/dri/* and memory allocation failures
4. Deploy runtime kernel integrity monitoring (AIDE, Tripwire) to detect memory corruption
5. Implement application sandboxing (seccomp, pledge) to limit IOCTL access
DETECTION RULES:
- Monitor for DMABUF IOCTL calls (DMA_BUF_IOCTL_SYNC, DMA_BUF_IOCTL_SHARE) from unprivileged processes
- Alert on kernel panic/oops messages related to memory corruption in video/graphics subsystems
- Track failed memory allocation attempts followed by IOCTL calls
- Monitor for privilege escalation attempts following graphics subsystem access
- Log all attempts to access deprecated DMABUF interfaces
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. حصر جميع الأجهزة التي تستخدم البرامج الثابتة المتأثرة من Qualcomm (Cologne, FastConnect 6900/7800, SC8380XP, Snapdragon AR1, سلسلة WCD الصوتية, WSA8830)
2. تقييد الوصول المحلي إلى واجهات DMABUF IOCTL من خلال سياسات SELinux/AppArmor
3. تعطيل استدعاءات DMABUF IOCTL المهملة إن أمكن من خلال معاملات وحدة النواة
4. تنفيذ عشوائية تخطيط مساحة العنوان (KASLR) وحماية المكدس
إرشادات التصحيح:
- مراقبة نشرات أمان Qualcomm وقوائم بريد نواة Linux للحصول على التحديثات
- تحضير إجراءات تحديث البرامج الثابتة للأجهزة المتأثرة بمجرد إصدار التصحيحات
- إعطاء الأولوية للتحديثات للأجهزة في البنية التحتية الحرجة والخدمات المالية
الضوابط التعويضية:
1. نشر ضوابط الوصول الإلزامية التي تقيد وصول العمليات غير المميزة إلى أجهزة /dev/dri/* و /dev/ion
2. تنفيذ توقيع وحدة النواة والإقلاع الآمن لمنع تحميل برامج التشغيل غير المصرح بها
3. تفعيل تسجيل التدقيق لجميع استدعاءات IOCTL إلى /dev/dri/* وفشل تخصيص الذاكرة
4. نشر مراقبة سلامة النواة في وقت التشغيل (AIDE, Tripwire) للكشف عن فساد الذاكرة
5. تنفيذ عزل التطبيقات (seccomp, pledge) لتحديد وصول IOCTL
قواعد الكشف:
- مراقبة استدعاءات DMABUF IOCTL من العمليات غير المميزة
- التنبيه على رسائل kernel panic المتعلقة بفساد الذاكرة
- تتبع محاولات تخصيص الذاكرة الفاشلة متبوعة باستدعاءات IOCTL
- مراقبة محاولات تصعيد الامتيازات بعد الوصول إلى نظام الرسومات
- تسجيل جميع محاولات الوصول إلى واجهات DMABUF المهملة
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
ECC 2024 A.5.1.1 - Access Control Policies (DMABUF IOCTL restrictions)
ECC 2024 A.8.1.1 - Audit and Accountability (kernel IOCTL logging)
ECC 2024 A.12.2.1 - Change Management (firmware update procedures)
ECC 2024 A.14.2.1 - System Hardening (KASLR, secure boot enforcement)
🔵 SAMA CSF
SAMA CSF ID.AM-2 - Asset Management (inventory affected Qualcomm devices)
SAMA CSF PR.AC-1 - Access Control (restrict DMABUF IOCTL access)
SAMA CSF DE.CM-1 - Detection and Analysis (kernel memory corruption monitoring)
SAMA CSF RS.MI-2 - Mitigation (compensating controls implementation)
🟡 ISO 27001:2022
ISO 27001:2022 A.5.15 - Access Control (DMABUF interface restrictions)
ISO 27001:2022 A.8.1 - Audit Logging (IOCTL call monitoring)
ISO 27001:2022 A.8.33 - System Hardening (kernel protections)
ISO 27001:2022 A.14.2.1 - Change Management (patch procedures)
🟣 PCI DSS v4.0.1
PCI DSS 2.4 - Configuration Standards (disable deprecated DMABUF calls)
PCI DSS 6.2 - Security Patches (monitor for firmware updates)
PCI DSS 10.2 - Logging and Monitoring (audit IOCTL access on payment devices)
📦 Affected Products / CPE 23 entries
qualcomm:cologne_firmware:-
qualcomm:fastconnect_6900_firmware:-
qualcomm:fastconnect_7800_firmware:-
qualcomm:qca0000_firmware:-
qualcomm:sc8380xp_firmware:-
qualcomm:snapdragon_ar1_gen_1_platform_firmware:-
qualcomm:wcd9378c_firmware:-
qualcomm:wcd9380_firmware:-
qualcomm:wcd9385_firmware:-
qualcomm:wsa8830_firmware:-
qualcomm:wsa8832_firmware:-
qualcomm:wsa8835_firmware:-
qualcomm:wsa8840_firmware:-
qualcomm:wsa8845_firmware:-
qualcomm:wsa8845h_firmware:-
qualcomm:x2000077_firmware:-
qualcomm:x2000086_firmware:-
qualcomm:x2000090_firmware:-
qualcomm:x2000092_firmware:-
qualcomm:x2000094_firmware:-
qualcomm:xg101002_firmware:-
qualcomm:xg101032_firmware:-
qualcomm:xg101039_firmware:-