The backtrack compilation code in the Irregex package (aka IrRegular Expressions) before 0.9.6 for Scheme allows remote attackers to cause a denial of service (memory consumption) via a crafted regular expression with a repeating pattern.
{ "binaries": [ { "binary_name": "chicken-bin", "binary_version": "4.9.0.1-1" }, { "binary_name": "libchicken-dev", "binary_version": "4.9.0.1-1" }, { "binary_name": "libchicken7", "binary_version": "4.9.0.1-1" } ] }