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Vulnerabilities

CVE-2026-43124

Medium
CWE-476 — Weakness Type
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:

pstore: ram_core: fix incorrect success return when vmap() fails

In persistent_ram_vmap(), vmap() may return NULL on failure.

If offset is non-zero, adding offset_in_page(start) causes the function
to return a non-NULL pointer even though the mapping failed.
persistent_ram_buffer_map() therefore incorrectly returns success.

Subsequent access to prz->buffer may dereference an invalid address
and cause crashes.

Add proper NULL checking for vmap() failures.

🤖 AI Executive Summary

A Linux kernel vulnerability in pstore's ram_core module fails to properly validate vmap() return values, potentially returning success when memory mapping fails. This can lead to invalid memory access and system crashes when the buffer is subsequently accessed.

📄 Description (Arabic)

تحتوي هذه الثغرة على فشل في التحقق من قيم الإرجاع الفارغة (NULL) من دالة vmap() في وحدة pstore ram_core بنواة Linux. عندما يكون الإزاحة غير صفرية، قد تُرجع الدالة مؤشراً غير فارغ حتى عند فشل التعيين، مما يؤدي إلى إرجاع نجاح خاطئ. قد يؤدي الوصول اللاحق إلى prz->buffer إلى إلغاء مرجع عنوان ذاكرة غير صحيح وتعطل النظام.

🤖 ملخص تنفيذي (AI)

A Linux kernel vulnerability in pstore's ram_core module fails to properly validate vmap() return values, potentially returning success when memory mapping fails. This can lead to invalid memory access and system crashes when the buffer is subsequently accessed.

🤖 AI Intelligence Analysis Analyzed: May 25, 2026 21:17
🇸🇦 Saudi Arabia Impact Assessment
Saudi Relevance: medium
🏢 Affected Saudi Sectors
government telecom energy banking
🎯 MITRE ATT&CK Techniques
⚖️ Saudi Risk Score (AI)
5.0
/ 10.0
🔧 Remediation Steps (English)
Update the Linux kernel to a patched version that includes proper NULL checking for vmap() return values in persistent_ram_vmap(). Verify the fix is applied in kernel versions 5.10 and later. Test system stability after patching.
🔧 خطوات المعالجة (العربية)
قم بتحديث نواة Linux إلى إصدار معدل يتضمن التحقق الصحيح من قيم NULL المرجعة من vmap() في دالة persistent_ram_vmap(). تحقق من تطبيق الإصلاح في إصدارات النواة 5.10 وما بعده. اختبر استقرار النظام بعد التصحيح.
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
A.12.6.1 A.14.2.1
🔵 SAMA CSF
ID.BE-5.1 PR.PT-2.1
🟡 ISO 27001:2022
A.12.6.1 A.14.2.1 A.14.2.5
📦 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
CWECWE-476
EPSS0.01%
Exploit No
Patch ✓ Yes
Published 2026-05-06
Source Feed nvd
🇸🇦 Saudi Risk Score
5.0
/ 10.0 — Saudi Risk
Priority: MEDIUM
🏷️ Tags
patch-available CWE-476
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