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Vulnerabilities

CVE-2026-43264

Medium
Published: May 6, 2026  ·  Modified: May 9, 2026  ·  Source: NVD
CVSS v3
5.5
🔗 NVD Official
📄 Description (English)

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

fbdev: of: display_timing: fix refcount leak in of_get_display_timings()

of_parse_phandle() returns a device_node with refcount incremented,
which is stored in 'entry' and then copied to 'native_mode'. When the
error paths at lines 184 or 192 jump to 'entryfail', native_mode's
refcount is not decremented, causing a refcount leak.

Fix this by changing the goto target from 'entryfail' to 'timingfail',
which properly calls of_node_put(native_mode) before cleanup.

🤖 AI Executive Summary

A refcount leak vulnerability exists in the Linux kernel's fbdev display timing module where of_parse_phandle() increments a device node reference count that is not properly decremented on error paths. This can lead to memory exhaustion and denial of service in systems using framebuffer display timing functionality.

📄 Description (Arabic)

تحتوي وحدة توقيت العرض fbdev في نواة Linux على ثغرة تسرب عداد المراجع حيث لا يتم تقليل عداد المراجع المزيد من قبل of_parse_phandle() على مسارات الخطأ. يمكن أن يؤدي هذا إلى استنزاف الذاكرة وحالات الحرمان من الخدمة في الأنظمة التي تستخدم وظيفة توقيت العرض.

🤖 ملخص تنفيذي (AI)

A refcount leak vulnerability exists in the Linux kernel's fbdev display timing module where of_parse_phandle() increments a device node reference count that is not properly decremented on error paths. This can lead to memory exhaustion and denial of service in systems using framebuffer display timing functionality.

🤖 AI Intelligence Analysis Analyzed: May 25, 2026 02:48
🇸🇦 Saudi Arabia Impact Assessment
Saudi Relevance: medium
🏢 Affected Saudi Sectors
government telecom energy
🎯 MITRE ATT&CK Techniques
⚖️ Saudi Risk Score (AI)
5.0
/ 10.0
🔧 Remediation Steps (English)
Update the Linux kernel to the latest patched version that fixes the refcount leak in of_get_display_timings() by properly calling of_node_put(native_mode) before cleanup. Apply the patch that changes the error path goto target from 'entryfail' to 'timingfail'.
🔧 خطوات المعالجة (العربية)
قم بتحديث نواة Linux إلى أحدث إصدار مصحح يصلح تسرب عداد المراجع في of_get_display_timings() من خلال استدعاء of_node_put(native_mode) بشكل صحيح قبل التنظيف. طبق التصحيح الذي يغير هدف مسار الخطأ من 'entryfail' إلى 'timingfail'.
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
A.12.6.1 A.14.2.1
🔵 SAMA CSF
ID.RA-1 PR.IP-12
🟡 ISO 27001:2022
A.12.6.1 A.14.2.1
📦 Affected Products / CPE 7 entries
linux:linux_kernel
linux:linux_kernel
linux:linux_kernel
linux:linux_kernel
linux:linux_kernel
linux:linux_kernel
linux:linux_kernel
📊 CVSS Score
5.5
/ 10.0 — Medium
📊 CVSS Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack VectorL — Low / Local
Attack ComplexityL — Low / Local
Privileges RequiredL — Low / Local
User InteractionN — None / Network
ScopeU — Unchanged
ConfidentialityN — None / Network
IntegrityN — None / Network
AvailabilityH — High
📋 Quick Facts
Severity Medium
CVSS Score5.5
EPSS0.01%
Exploit No
Patch ✓ Yes
Published 2026-05-06
Source Feed nvd
Views 2
🇸🇦 Saudi Risk Score
5.0
/ 10.0 — Saudi Risk
Priority: MEDIUM
🏷️ Tags
patch-available
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