iommu/iommufd: Fix IOPF group ownership UAF

{
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/iommu/io-pgfault.c",
                        "drivers/iommu/iommufd/eventq.c",
                        "include/linux/iommu.h"
                    ],
                    "versions": [
                        {
                            "version": "34765cbc679c59ea5d952d738d2d16bf4aadc497",
                            "lessThan": "8563099bc4b03e1894a983a394225d69b05d9277",
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                            "versionType": "git"
                        },
                        {
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                            "lessThan": "6da8f37419dd4c456f26fc203f04e000186f4b3d",
                            "status": "affected",
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                        }
                    ]
                }

{
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/iommu/io-pgfault.c",
                        "drivers/iommu/iommufd/eventq.c",
                        "include/linux/iommu.h"
                    ],
                    "versions": [
                        {
                            "version": "6.11",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.11",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.114",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.44",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.1.8",
                            "lessThanOrEqual": "7.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }