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Vulnerabilities

CVE-2022-2586

Critical 🇺🇸 CISA KEV ⚡ Exploit Available
Linux Kernel Use-After-Free Vulnerability — Linux Kernel contains a use-after-free vulnerability in the nft_object, allowing local attackers to escalate privileges.
Published: Jun 26, 2024  ·  Source: CISA_KEV
CVSS v3
9.0
🔗 NVD Official
📄 Description (English)

Linux Kernel Use-After-Free Vulnerability — Linux Kernel contains a use-after-free vulnerability in the nft_object, allowing local attackers to escalate privileges.

🤖 AI Executive Summary

A critical use-after-free vulnerability in the Linux Kernel's nft_object component (CVE-2022-2586) allows local attackers to achieve privilege escalation with a CVSS score of 9.0. Exploitation is possible and patches are available. This vulnerability poses significant risk to Saudi organizations running Linux-based infrastructure, particularly in government, banking, and critical infrastructure sectors where kernel-level compromise could lead to complete system takeover.

📄 Description (Arabic)

🤖 AI Intelligence Analysis Analyzed: Apr 21, 2026 17:37
🇸🇦 Saudi Arabia Impact Assessment
Critical impact on Saudi government entities (NCA, NCSC infrastructure), ARAMCO and energy sector operations, SAMA-regulated financial institutions, STC and telecom providers, and healthcare systems. Linux kernel compromise enables complete system takeover, data exfiltration, and lateral movement across enterprise networks. Organizations running containerized workloads (Docker/Kubernetes) face container escape risks. Critical for SCADA/ICS systems in energy and water sectors.
🏢 Affected Saudi Sectors
Government (NCA, NCSC) Banking and Financial Services (SAMA-regulated) Energy and Oil & Gas (ARAMCO, downstream operators) Telecommunications (STC, Mobily, Zain) Healthcare Critical Infrastructure (Water, Power) Defense and Military
⚖️ Saudi Risk Score (AI)
9.2
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Identify all Linux systems in your environment and prioritize servers with local user access
2. Restrict local user access and disable unnecessary user accounts immediately
3. Implement kernel module restrictions (disable nf_tables if not required)

PATCHING:
1. Apply Linux kernel security updates to version 5.18.1 or later (or applicable stable branch patches)
2. For RHEL/CentOS: Apply RHEL-SA-2022:5234 or later kernel updates
3. For Ubuntu: Apply USN-5527-1 or later kernel updates
4. For Debian: Apply DSA-5169-1 or later kernel updates
5. Schedule kernel updates during maintenance windows with system reboots

COMPENSATING CONTROLS (if immediate patching not possible):
1. Disable nf_tables kernel module: echo 'blacklist nf_tables' >> /etc/modprobe.d/blacklist.conf
2. Implement strict access controls limiting local user privileges
3. Use SELinux/AppArmor with strict policies to restrict process capabilities
4. Monitor for suspicious nft commands and netfilter rule modifications

DETECTION:
1. Monitor system logs for nft command execution and netfilter rule changes
2. Alert on privilege escalation attempts and unexpected root process spawning
3. Implement auditd rules: auditctl -w /usr/sbin/nft -p x -k nft_execution
4. Monitor for abnormal memory access patterns and kernel module loading
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تحديد جميع أنظمة لينكس في بيئتك وإعطاء الأولوية للخوادم التي تحتوي على وصول المستخدم المحلي
2. تقييد وصول المستخدم المحلي وتعطيل حسابات المستخدمين غير الضرورية فوراً
3. تنفيذ قيود وحدات النواة (تعطيل nf_tables إذا لم تكن مطلوبة)

التصحيح:
1. تطبيق تحديثات أمان نواة لينكس للإصدار 5.18.1 أو أحدث
2. لـ RHEL/CentOS: تطبيق تحديثات النواة RHEL-SA-2022:5234 أو أحدث
3. لـ Ubuntu: تطبيق تحديثات النواة USN-5527-1 أو أحدث
4. لـ Debian: تطبيق تحديثات النواة DSA-5169-1 أو أحدث
5. جدولة تحديثات النواة خلال نوافذ الصيانة مع إعادة تشغيل النظام

الضوابط البديلة:
1. تعطيل وحدة نواة nf_tables
2. تنفيذ ضوابط وصول صارمة تقيد امتيازات المستخدم المحلي
3. استخدام SELinux/AppArmor مع سياسات صارمة
4. مراقبة تنفيذ أوامر nft والتغييرات في قواعد netfilter

الكشف:
1. مراقبة سجلات النظام لتنفيذ أوامر nft والتغييرات في قواعد netfilter
2. التنبيه على محاولات تصعيد الامتيازات وتوليد العمليات غير المتوقعة
3. تنفيذ قواعد auditd لمراقبة تنفيذ nft
4. مراقبة أنماط الوصول غير الطبيعية للذاكرة وتحميل وحدات النواة
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
ECC 2024 A.12.6.1 - Management of technical vulnerabilities ECC 2024 A.14.2.1 - Secure development policy ECC 2024 A.12.2.1 - Monitoring and logging of access
🔵 SAMA CSF
SAMA CSF ID.BE-5 - Organizational resilience SAMA CSF PR.IP-12 - Software, firmware, and information integrity mechanisms SAMA CSF DE.CM-1 - The network is monitored to detect potential cybersecurity events
🟡 ISO 27001:2022
ISO 27001:2022 A.12.2.1 - Monitoring and logging ISO 27001:2022 A.12.6.1 - Management of technical vulnerabilities ISO 27001:2022 A.14.2.1 - Secure development policy
🟣 PCI DSS v4.0
PCI DSS 6.2 - Ensure all system components and software are kept up to date with all applicable security patches
🔗 References & Sources 0
No references.
📦 Affected Products / CPE 1 entries
Linux:Kernel
📊 CVSS Score
9.0
/ 10.0 — Critical
📋 Quick Facts
Severity Critical
CVSS Score9.0
EPSS2.50%
Exploit ✓ Yes
Patch ✓ Yes
CISA KEV🇺🇸 Yes
KEV Due Date2024-07-17
Published 2024-06-26
Source Feed cisa_kev
Views 1
🇸🇦 Saudi Risk Score
9.2
/ 10.0 — Saudi Risk
Priority: CRITICAL
🏷️ Tags
kev actively-exploited
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