FKIE_CVE-2026-7763
Vulnerability from fkie_nvd - Published: 2026-06-05 02:17 - Updated: 2026-07-23 07:10
Severity
Summary
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.
References
Impacted products
| Vendor | Product | Version |
|---|
{
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"product": "HaLowLink 2",
"vendor": "Morse Micro",
"versions": [
{
"lessThan": "2.11.13",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
}
],
"source": "4ac701fe-44e9-4bcd-9585-dd6449257611"
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "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."
},
{
"lang": "es",
"value": "Una vulnerabilidad de desbordamiento de b\u00fafer basado en mont\u00edculo en el controlador de kernel Wi-Fi HaLow morse.ko en versiones de software Morse Micro HaLowLink 2 anteriores a la 2.11.13 permite a un atacante no autenticado dentro del alcance de radio causar una denegaci\u00f3n de servicio (p\u00e1nico del kernel) o potencialmente lograr ejecuci\u00f3n remota de c\u00f3digo a trav\u00e9s de una trama de baliza 802.11ah manipulada que contiene un Elemento de Informaci\u00f3n de Mapa de Indicaci\u00f3n de Tr\u00e1fico (TIM) malformado. La funci\u00f3n morse_page_slicing_process_tim_element() en page_slicing.c deriva la longitud del mapa de bits TIM directamente de un campo IE recibido sin validarlo contra el b\u00fafer de destino de tama\u00f1o fijo antes de pasarlo a operaciones memset y memcpy, permitiendo hasta 252 bytes de datos controlados por el atacante ser escritos m\u00e1s all\u00e1 del l\u00edmite del b\u00fafer. Debido a que las balizas son tramas de difusi\u00f3n procesadas durante el escaneo pasivo, no se requiere autenticaci\u00f3n, asociaci\u00f3n o interacci\u00f3n del usuario."
}
],
"id": "CVE-2026-7763",
"lastModified": "2026-07-23T07:10:00.113",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 9.8,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 3.9,
"impactScore": 5.9,
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-7763",
"options": [
{
"exploitation": "none"
},
{
"automatable": "yes"
},
{
"technicalImpact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-06-05T20:20:06.506327Z",
"version": "2.0.3"
}
}
]
},
"published": "2026-06-05T02:17:14.640",
"references": [
{
"source": "4ac701fe-44e9-4bcd-9585-dd6449257611",
"url": "https://www.morsemicro.com/security-advisories/MM-SA-2026-001"
}
],
"sourceIdentifier": "4ac701fe-44e9-4bcd-9585-dd6449257611",
"vulnStatus": "Awaiting Analysis"
}
Loading…
Loading…
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Loading…
The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
Loading…
Loading…