A memory corruption in the IPsec code path of Brocade NetIron OS on Brocade MLXs 5.8.00 through 5.8.00e, 5.9.00 through 5.9.00bd, 6.0.00, and 6.0.00a images could allow attackers to cause a denial of service (line card reset) via certain constructed IPsec control packets.