CVE-2026-23363

#!/usr/bin/env python3 # Conceptual PoC for CVE-2026-23363 # This script attempts to send a malformed 802.11 frame to trigger the OOB access. # Requires a system with the vulnerable mt7925 driver and appropriate hardware. import socket import struct import fcntl import time # Constants for Netlink (simplified) NETLINK_GENERIC = 16 # ... (Standard nl80211 setup would go here) ... def trigger_oob_access(): print("[+] Attempting to trigger CVE-2026-23363...") # In a real scenario, we would craft a short 802.11 Management frame (e.g., Beacon) # and inject it via nl80211. The frame must be shorter than expected # when accessing mgmt->u.action.category or similar fields. # Example of a crafted frame header (truncated) malformed_frame = bytes([0x80, 0x00, 0x00, 0x00]) # Very short frame # This is a placeholder for the actual nl80211 message construction # which involves complex structure packing. try: # sock = socket.socket(socket.AF_NETLINK, socket.SOCK_RAW, NETLINK_GENERIC) # sock.send(malformed_frame) print("[!] Malformed frame constructed (Local execution required)") print("[!] Exploitation relies on driver missing length check in mt7925_mac_write_txwi_80211") except Exception as e: print(f"Error: {e}") if __name__ == "__main__": trigger_oob_access()

{"cve": {"id": "CVE-2026-23363", "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "published": "2026-03-25T11:16:35.407", "lastModified": "2026-04-24T18:48:32.070", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: mt7925: Fix possible oob access in mt7925_mac_write_txwi_80211()\n\nCheck frame length before accessing the mgmt fields in\nmt7925_mac_write_txwi_80211 in order to avoid a possible oob access."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nwifi: mt76: mt7925: Corrige posible acceso fuera de límites en mt7925_mac_write_txwi_80211()\n\nComprueba la longitud del frame antes de acceder a los campos mgmt en mt7925_mac_write_txwi_80211 para evitar un posible acceso fuera de límites."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H", "baseScore": 7.1, "baseSeverity": "HIGH", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.8, "impactScore": 5.2}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-125"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.7.1", "versionEndExcluding": "6.12.77", "matchCriteriaId": "EAB42ADC-2196-46FA-AAE7-AE91B7577E53"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.13", "versionEndExcluding": "6.18.17", "matchCriteriaId": "A5E006E4-59C7-43C1-9231-62A72219F2BA"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.19", "versionEndExcluding": "6.19.7", "matchCriteriaId": "69245D10-0B71-485E-80C3-A64F077004D3"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:6.7:-:*:*:*:*:*:*", "matchCriteriaId": "62B55B1B-7D3E-499B-9C42-E9F1EF05A54A"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*", "matchCriteriaId": "F253B622-8837-4245-BCE5-A7BF8FC76A16"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*", "matchCriteriaId": "4AE85AD8-4641-4E7C-A2F4-305E2CD9EE64"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*", "matchCriteriaId": "F666C8D8-6538-46D4-B318-87610DE64C34"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:*", "matchCriteriaId": "02259FDA-961B-47BC-AE7F-93D7EC6E90C2"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:*", "matchCriteriaId": "58A9FEFF-C040-420D-8F0A-BFDAAA1DF258"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc6:*:*:*:*:*:*", "matchCriteriaId": "1D2315C0-D46F-4F85-9754-F9E5E11374A6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc7:*:*:*:*:*:*", "matchCriteriaId": "512EE3A8-A590-4501-9A94-5D4B268D6138"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/22a6419a8b955df81082285543be3e61816c49b5", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"]}, {"url": "https://git.kernel.org/stable/c/2831a8c574545101e6d0df50785fccb16474eb3c", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"]}, {"url": "https://git.kernel.org/stable/c/3356464e50e1ee15ba3c324ef6cc5a475c2e96e4", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"]}, {"url": "https://git.kernel.org/stable/c/c41a9abd6ae31d130e8f332e7c8800c4c866234b", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"]}]}}