Este repositorio contiene una demostración educativa de la mitigación para **CVE-2026-68820**, una vulnerabilidad crítica de tipo **Use-After-Free (UAF)** en el driver `afd.sys` de Windows.
This repository contains an educational demonstration of the mitigation for CVE-2026-68820, a critical Use-After-Free (UAF) vulnerability in the Windows afd.sys driver.
Vulnerability context:
The code in src/afd_close_socket_patch.c demonstrates how to fix the root cause:
KeAcquireSpinLock for exclusive access to the socket.NULL before freeing the memory.InterlockedDecrement to release the object only when there are no active references [citation:4].The detection/ folder contains rules to identify related malicious activity:
afd_uaf_privilege_escalation.yml: Detects suspicious patterns of rapid socket creation/destruction (heap grooming) and privilege escalation [citation:11][citation:15].suspicious_service_creation_post_afd.yml: Identifies suspicious service creation after anomalous network activity [citation:15].lazarus_fudmodule_rootkit.yar: Detects the FudModule v3.1 rootkit used in this campaign [citation:1][citation:14].lazarus_relayshell_webshell.yar: Detects the RelayShell webshell used as a C2 relay [citation:1][citation:14].troy_backdoor.yar: Detects the Troy backdoor [citation:1][citation:5].The file iocs/cve-2026-68820_iocs.csv contains hashes, domains, and IPs associated with the campaign [citation:1][citation:13].
This code is exclusively for educational and research purposes in controlled environments. Malicious use of this information is the user's responsibility. It must not be used to exploit systems without explicit authorization.
This project is licensed under the MIT license (see LICENSE).