CVE-2026-7763
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.
- Score
- CVSS 3.1 9.8 Critical
- Status
- Awaiting Analysis - 4ac701fe-44e9-4bcd-9585-dd6449257611
- Published
- 2026-06-05
- Last modified
- 2026-06-05
Affected products
References
- https://www.morsemicro.com/security-advisories/MM-SA-2026-001
