Kernel heap disclosure or crash via undersized IE
Published Jun 4, 2026 · Updated Jun 4, 2026
Out-of-bounds reads in Morse Micro HaLowLink 2 before 2.11.12 allow attackers within radio range to read heap data or crash it via malformed frames. morse_vendor_find_vendor_ie() accepts Vendor Information Elements longer than three bytes without verifying the full structure size, and downstream routines read fixed offsets up to nine bytes beyond the heap object. No authentication, association, or user interaction is required; reachability requires 802.11ah radio range, and impact is limited to a small disclosure or kernel oops or panic.
Summary
What happened
Out-of-bounds reads in Morse Micro HaLowLink 2 before 2.11.12 allow attackers within radio range to read heap data or crash it via malformed frames. morse_vendor_find_vendor_ie() accepts Vendor Information Elements longer than three bytes without verifying the full structure size, and downstream routines read fixed offsets up to nine bytes beyond the heap object. No authentication, association, or user interaction is required; reachability requires 802.11ah radio range, and impact is limited to a small disclosure or kernel oops or panic.
The record
- CVE
- CVE-2026-7764
- Published
- Jun 4, 2026
- Updated
- Jun 4, 2026
- Vendor
- Morse Micro
- Product
- HaLowLink 2
- Classifications
- CWE-125, T1499
- Attack vector
- adjacent
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jun 4, 2026CVE publishedPublication date reported by the CVE source.
- Jun 4, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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- Affected versionversion=0 <2.11.12
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
What attackers are doing with it
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Public exploit references
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Technologies
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Your stack
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