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Vulnerabilities

CVE-2025-68817

High
In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free in ksmbd_tree_connect_put under concurrency Under high concurrency, A tree-connection object (tcon) is f
CWE-416 — Weakness Type
Published: Jan 13, 2026  ·  Modified: Feb 28, 2026  ·  Source: NVD
CVSS v3
7.8
🔗 NVD Official
📄 Description (English)

In the Linux kernel, the following vulnerability has been resolved:

ksmbd: fix use-after-free in ksmbd_tree_connect_put under concurrency

Under high concurrency, A tree-connection object (tcon) is freed on
a disconnect path while another path still holds a reference and later
executes *_put()/write on it.

🤖 AI Executive Summary

CVE-2025-68817 is a use-after-free vulnerability in Linux kernel's ksmbd SMB server implementation that occurs when a tree-connection object is freed while another concurrent path still holds a reference to it. This can lead to memory corruption and potential code execution under high concurrency conditions.

📄 Description (Arabic)

تحدث هذه الثغرة في خادم SMB بنواة Linux عندما يتم تحرير كائن اتصال الشجرة (tcon) على مسار قطع الاتصال بينما يحتفظ مسار آخر بمرجع نشط له. يؤدي هذا إلى حالة تنافس حرجة حيث قد يحاول المسار الثاني تنفيذ عمليات على الذاكرة المحررة بالفعل.

🤖 ملخص تنفيذي (AI)

CVE-2025-68817 هي ثغرة استخدام بعد التحرير في خادم SMB بنواة Linux حيث يتم تحرير كائن الاتصال بالشجرة بينما يحتفظ مسار آخر بمرجع له. يمكن أن يؤدي هذا إلى تلف الذاكرة وتنفيذ أكواد محتملة تحت ظروف التزامن العالي.

🤖 AI Intelligence Analysis Analyzed: May 2, 2026 12:32
🇸🇦 Saudi Arabia Impact Assessment
Saudi Relevance: high
🏢 Affected Saudi Sectors
banking telecom government healthcare
🎯 MITRE ATT&CK Techniques
⚖️ Saudi Risk Score (AI)
8.0
/ 10.0
🔧 Remediation Steps (English)
Update the Linux kernel to the latest patched version that resolves the use-after-free condition in ksmbd_tree_connect_put. Implement proper reference counting and synchronization mechanisms to prevent concurrent access to freed tree-connection objects. Apply kernel security patches immediately and monitor system logs for exploitation attempts.
🔧 خطوات المعالجة (العربية)
قم بتحديث نواة Linux إلى أحدث إصدار مصحح يحل مشكلة الاستخدام بعد التحرير في ksmbd_tree_connect_put. قم بتطبيق آليات العد المرجعي والمزامنة الصحيحة لمنع الوصول المتزامن إلى كائنات الاتصال المحررة. طبق تصحيحات أمان النواة فوراً وراقب سجلات النظام لمحاولات الاستغلال.
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
2.1 2.2 3.1
🔵 SAMA CSF
ID.BE-1 PR.DS-6 DE.CM-1
🟡 ISO 27001:2022
A.12.2.1 A.12.6.1 A.14.2.1
📦 Affected Products / CPE 9 entries
linux:linux_kernel
linux:linux_kernel
linux:linux_kernel
linux:linux_kernel
linux:linux_kernel
linux:linux_kernel:6.6
linux:linux_kernel:6.6
linux:linux_kernel:6.6
linux:linux_kernel:6.6
📊 CVSS Score
7.8
/ 10.0 — High
📊 CVSS Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack VectorL — Low / Local
Attack ComplexityL — Low / Local
Privileges RequiredL — Low / Local
User InteractionN — None / Network
ScopeU — Unchanged
ConfidentialityH — High
IntegrityH — High
AvailabilityH — High
📋 Quick Facts
Severity High
CVSS Score7.8
CWECWE-416
EPSS0.01%
Exploit No
Patch ✓ Yes
Published 2026-01-13
Source Feed nvd
Views 5
🇸🇦 Saudi Risk Score
8.0
/ 10.0 — Saudi Risk
Priority: HIGH
🏷️ Tags
patch-available CWE-416
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