OFPMultipartReply in parser.py in Faucet SDN Ryu 4.34 allows attackers to cause a denial of service (infinite loop) via b.length=0.
OFPMultipartReply
b.length=0
"https://github.com/pypa/advisory-database/blob/main/vulns/ryu/PYSEC-2026-1881.yaml"