Denial of Service via sending bogus X.509 certificates

{
                    "vendor": "The Libreswan Project",
                    "product": "libreswan",
                    "packageName": "libreswan",
                    "collectionURL": "https://github.com/libreswan/libreswan",
                    "repo": "https://github.com/libreswan/libreswan",
                    "versions": [
                        {
                            "version": "5.3",
                            "status": "affected",
                            "lessThanOrEqual": "5.3.2",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.3.3",
                            "status": "unaffected",
                            "versionType": "semver"
                        }
                    ],
                    "defaultStatus": "unaffected",
                    "programRoutines": [
                        {
                            "name": "add_decoded_cert"
                        }
                    ]
                }