EIP-2026-100957

PRE-CVE

FreeBSD 6.1 - 'kqueue()' Null Pointer Dereference Privilege Escalation

Title source: legacy

Exploitation Summary

EIP tracks 1 public exploit for EIP-2026-100957. PoCs published by Przemyslaw Frasunek.

AI-analyzed exploit summary This exploit leverages a race condition in FreeBSD's kevent() syscall on SMP systems, leading to a kernel NULL pointer dereference. It spawns two threads to trigger the vulnerability, ultimately executing arbitrary kernel code to escalate privileges to root.

Description

FreeBSD 6.1 - 'kqueue()' Null Pointer Dereference Privilege Escalation

Exploits (1)

exploitdb WORKING POC VERIFIED

by Przemyslaw Frasunek · clocalfreebsd

https://www.exploit-db.com/exploits/9488

View Code ZIP pw:eip

This exploit leverages a race condition in FreeBSD's kevent() syscall on SMP systems, leading to a kernel NULL pointer dereference. It spawns two threads to trigger the vulnerability, ultimately executing arbitrary kernel code to escalate privileges to root.

Classification

Working Poc 95%

Attack Type

Lpe

Complexity

Moderate

Reliability

Racy

Target: FreeBSD <= 6.1 (SMP systems)

No auth needed

Prerequisites: Multiprocessor (SMP) system · Unpatched FreeBSD <= 6.1

MITRE ATT&CK

T1068 - Exploitation for Privilege Escalation T1211 - Exploitation for Defense Evasion

devstral-2 · analyzed Feb 16, 2026 Full analysis →

Details

Status pre_cve

Tracked Since Feb 18, 2026