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Vulnerabilities

CVE-2026-31748

High
CWE-787 — Weakness Type
Published: May 1, 2026  ·  Modified: May 8, 2026  ·  Source: NVD
CVSS v3
7.8
🔗 NVD Official
📄 Description (English)

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

comedi: me_daq: Fix potential overrun of firmware buffer

`me2600_xilinx_download()` loads the firmware that was requested by
`request_firmware()`. It is possible for it to overrun the source
buffer because it blindly trusts the file format. It reads a data
stream length from the first 4 bytes into variable `file_length` and
reads the data stream contents of length `file_length` from offset 16
onwards. Although it checks that the supplied firmware is at least 16
bytes long, it does not check that it is long enough to contain the data
stream.

Add a test to ensure that the supplied firmware is long enough to
contain the header and the data stream. On failure, log an error and
return `-EINVAL`.

🤖 AI Executive Summary

A buffer overrun vulnerability exists in the Linux kernel's comedi me_daq driver where the firmware loading function fails to validate that the firmware file is long enough to contain the declared data stream, potentially allowing out-of-bounds reads. The vulnerability affects systems using the me_daq data acquisition device driver when loading malicious or corrupted firmware files.

📄 Description (Arabic)

يوجد ثغرة تجاوز مخزن مؤقت في دالة تحميل البرنامج الثابت me2600_xilinx_download() حيث تقرأ طول تدفق البيانات من أول 4 بايتات دون التحقق من أن ملف البرنامج الثابت يحتوي على البيانات المعلنة. هذا يسمح بقراءة الذاكرة خارج الحدود المسموحة عند استخدام ملفات برنامج ثابت ضارة أو تالفة.

🤖 ملخص تنفيذي (AI)

A buffer overrun vulnerability in Linux kernel comedi me_daq driver fails to validate firmware file length before reading data stream contents, potentially causing out-of-bounds memory access. This affects Saudi organizations using me_daq hardware with vulnerable kernel versions.

🤖 AI Intelligence Analysis Analyzed: May 7, 2026 23:26
🇸🇦 Saudi Arabia Impact Assessment
Saudi Relevance: medium
🏢 Affected Saudi Sectors
energy 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 includes the fix for CVE-2026-31748. Verify firmware file integrity and implement strict validation of firmware file format before loading. Restrict firmware loading to trusted sources only and disable me_daq driver if not required.
🔧 خطوات المعالجة (العربية)
قم بتحديث نواة Linux إلى أحدث إصدار يتضمن إصلاح CVE-2026-31748. تحقق من سلامة ملف البرنامج الثابت وطبق التحقق الصارم من تنسيق الملف قبل التحميل. قيد تحميل البرنامج الثابت على مصادر موثوقة فقط وعطل برنامج التشغيل إذا لم يكن مطلوباً.
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
2.1.1 2.2.2
🔵 SAMA CSF
ID.SC-4 PR.DS-1
🟡 ISO 27001:2022
A.12.2.1 A.14.2.1
📦 Affected Products / CPE 13 entries
linux:linux_kernel
linux:linux_kernel
linux:linux_kernel
linux:linux_kernel
linux:linux_kernel
linux:linux_kernel
linux:linux_kernel
linux:linux_kernel:7.0
linux:linux_kernel:7.0
linux:linux_kernel:7.0
linux:linux_kernel:7.0
linux:linux_kernel:7.0
linux:linux_kernel:7.0
📊 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-787
EPSS0.03%
Exploit No
Patch ✓ Yes
Published 2026-05-01
Source Feed nvd
🇸🇦 Saudi Risk Score
8.0
/ 10.0 — Saudi Risk
Priority: HIGH
🏷️ Tags
patch-available CWE-787
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