net: qrtr: fix refcount saturation and potential UAF in qrtr_port_remove

{
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/qrtr/af_qrtr.c"
                    ],
                    "versions": [
                        {
                            "version": "bdabad3e363d825ddf9679dd431cca0b2c30f881",
                            "lessThan": "2aa4c12723fe432e623462a3be42a197a128722b",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "bdabad3e363d825ddf9679dd431cca0b2c30f881",
                            "lessThan": "03bfa95e452e2b6ccd76a332060ae4feaf5ad84d",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "bdabad3e363d825ddf9679dd431cca0b2c30f881",
                            "lessThan": "474293d90880622fde9d2430fb0165767090f7b3",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "bdabad3e363d825ddf9679dd431cca0b2c30f881",
                            "lessThan": "2047c2aa0963bb2872fd722300a15bcb441a4c00",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "bdabad3e363d825ddf9679dd431cca0b2c30f881",
                            "lessThan": "7de2d447072be3b1a76793f034432338fc9c494b",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "bdabad3e363d825ddf9679dd431cca0b2c30f881",
                            "lessThan": "ab269990ed58143a92a263be1bee626d82ac03da",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "bdabad3e363d825ddf9679dd431cca0b2c30f881",
                            "lessThan": "3b20ec8f31e8a6a6782243f473b0abd3463621df",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "bdabad3e363d825ddf9679dd431cca0b2c30f881",
                            "lessThan": "a2171131ecda1ed61a594a1eb715e75fdad0fef5",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                }

{
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/qrtr/af_qrtr.c"
                    ],
                    "versions": [
                        {
                            "version": "4.7",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "4.7",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.259",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.210",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.176",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.143",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.94",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.36",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.0.13",
                            "lessThanOrEqual": "7.0.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.1",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }