block: fix uaf for flush rq while iterating tags

{
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "block/blk-sysfs.c",
                        "block/genhd.c"
                    ],
                    "versions": [
                        {
                            "version": "6cfeadbff3f8905f2854735ebb88e581402c16c4",
                            "lessThan": "1921fe7d2836f8be1d321cf430d17e0d4e05301b",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "6cfeadbff3f8905f2854735ebb88e581402c16c4",
                            "lessThan": "1364a29b71c7837770f1902c49e7a6e234d72c92",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "6cfeadbff3f8905f2854735ebb88e581402c16c4",
                            "lessThan": "a0e93b9fefafe97d596f9c98701ae6c3b04b3ff6",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "6cfeadbff3f8905f2854735ebb88e581402c16c4",
                            "lessThan": "61092568f2a9acb0e6e186f03f2e0649a4e86d09",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "6cfeadbff3f8905f2854735ebb88e581402c16c4",
                            "lessThan": "3802f73bd80766d70f319658f334754164075bc3",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                }

{
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "block/blk-sysfs.c",
                        "block/genhd.c"
                    ],
                    "versions": [
                        {
                            "version": "5.19",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.19",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.127",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.74",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.11.11",
                            "lessThanOrEqual": "6.11.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.2",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.13",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }