CVE-2026-7764
MediumCVSS 6.8Exploitation Probability (EPSS)
Low risk3th percentile - higher than 3% of all known CVEs
Summary
Out-of-bounds read vulnerability in the morse.ko HaLow Wi-Fi kernel driver in Morse Micro HaLowLink software before 2.11.12. An unauthenticated attacker within radio range can disclose a small amount of kernel heap memory or cause DoS (kernel oops/panic) via a crafted 802.11ah beacon or probe response with a malformed Vendor Information Element. The function morse_vendor_find_vendor_ie() does not validate IE length, leading to an out-of-bounds read of up to 9 bytes. No authentication or user interaction required.
Risk Assessment
An attacker can leak kernel memory information or cause system crashes, leading to Wi-Fi network disruptions.
Recommendation
Update Morse Micro HaLowLink software to version 2.11.12 or later.
Other vulnerabilities in Morse Micro HaLowLink
See all- CVE-2026-7763Critical
A heap-based buffer overflow vulnerability in the morse.ko HaLow Wi-Fi kernel driver in Morse Micro HaLowLink 2 software versions prior to 2.11.13 allows an unauthenticated attacker within radio range to cause a Denial of Service (kernel panic) or potentially achieve Remote Code Execution via a crafted 802.11ah beacon frame containing a malformed Traffic Indication Map (TIM) Information Element. The function morse_page_slicing_process_tim_element() in page_slicing.c derives the TIM bitmap length directly from a received IE field without validating it against the fixed-size destination buffer before passing it to memset and memcpy operations, allowing up to 252 bytes of attacker-controlled data to be written beyond the buffer boundary. Because beacons are broadcast frames processed during passive scanning, no authentication, association, or user interaction is required.
- CVE-2026-7762Critical
The HaLow Wi-Fi kernel driver (dot11ah.ko) in Morse Micro HaLowLink 2 software before version 2.11.13 contains a heap-based buffer overflow that can be exploited by an unauthenticated attacker within radio range to cause a kernel panic or remote code execution via a crafted beacon or probe response frame.
Original NVD description (English source)
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.