CVE-2026-7764
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Out-of-Bounds Read in Morse Micro HaLowLink 2 Wi-Fi Driver

Publication date: 2026-06-04

Last updated on: 2026-06-04

Assigner: Bugcrowd Inc.

Description
An out-of-bounds read vulnerability in the morse.ko HaLow Wi-Fi kernel driver in Morse Micro HaLowLink 2 software versions prior to 2.11.12 allows an unauthenticated attacker within radio range to disclose a small amount of kernel heap memory or cause a Denial of Service (kernel oops/panic) via a crafted 802.11ah beacon or probe response frame containing a malformed Vendor Information Element. The function morse_vendor_find_vendor_ie() does not validate the IE length against the expected structure size before its result is passed to morse_vendor_rx_caps_ops_ie() and morse_vendor_fill_sta_vendor_info(), which read at fixed offsets into the IE data. Because the length check only requires the IE to be longer than 3 bytes, an attacker can supply an undersized IE, causing a heap out-of-bounds read of up to 9 bytes. No authentication, association, or user interaction is required.
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Meta Information
Published
2026-06-04
Last Modified
2026-06-04
Generated
2026-06-24
AI Q&A
2026-06-04
EPSS Evaluated
2026-06-23
NVD
CVE-2026-7764
EUVD
EUVD-2026-34189
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
morse_micro halowlink_2 to 2.11.12 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-UNKNOWN
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Executive Summary

CVE-2026-7764 is an out-of-bounds read vulnerability in the morse.ko HaLow Wi-Fi kernel driver used in Morse Micro HaLowLink 2 software versions before 2.11.12.

An unauthenticated attacker within radio range can exploit this by sending a specially crafted 802.11ah beacon or probe response frame containing a malformed Vendor Information Element.

The vulnerability arises because the function morse_vendor_find_vendor_ie() does not properly validate the length of the Vendor Information Element before passing it to other functions that read fixed offsets, allowing an attacker to cause a heap out-of-bounds read of up to 9 bytes.

No authentication, association, or user interaction is required to exploit this vulnerability.

Impact Analysis

This vulnerability can impact you in two main ways:

  • An attacker can disclose a small amount of kernel heap memory, potentially leaking sensitive information.
  • An attacker can cause a Denial of Service (DoS) by triggering a kernel oops or panic, disrupting normal device operation.
Mitigation Strategies

The immediate step to mitigate this vulnerability is to upgrade the Morse Micro HaLowLink 2 software to version 2.11.12 or later.

Compliance Impact

The provided information does not specify how this vulnerability impacts compliance with common standards and regulations such as GDPR or HIPAA.

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