{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2023-53522",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2025-10-01T11:39:39.407Z",
        "datePublished": "2025-10-01T11:46:08.909Z",
        "dateUpdated": "2026-05-11T19:46:36.143Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T19:46:36.143Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncgroup,freezer: hold cpu_hotplug_lock before freezer_mutex\n\nsyzbot is reporting circular locking dependency between cpu_hotplug_lock\nand freezer_mutex, for commit f5d39b020809 (\"freezer,sched: Rewrite core\nfreezer logic\") replaced atomic_inc() in freezer_apply_state() with\nstatic_branch_inc() which holds cpu_hotplug_lock.\n\ncpu_hotplug_lock => cgroup_threadgroup_rwsem => freezer_mutex\n\n  cgroup_file_write() {\n    cgroup_procs_write() {\n      __cgroup_procs_write() {\n        cgroup_procs_write_start() {\n          cgroup_attach_lock() {\n            cpus_read_lock() {\n              percpu_down_read(&cpu_hotplug_lock);\n            }\n            percpu_down_write(&cgroup_threadgroup_rwsem);\n          }\n        }\n        cgroup_attach_task() {\n          cgroup_migrate() {\n            cgroup_migrate_execute() {\n              freezer_attach() {\n                mutex_lock(&freezer_mutex);\n                (...snipped...)\n              }\n            }\n          }\n        }\n        (...snipped...)\n      }\n    }\n  }\n\nfreezer_mutex => cpu_hotplug_lock\n\n  cgroup_file_write() {\n    freezer_write() {\n      freezer_change_state() {\n        mutex_lock(&freezer_mutex);\n        freezer_apply_state() {\n          static_branch_inc(&freezer_active) {\n            static_key_slow_inc() {\n              cpus_read_lock();\n              static_key_slow_inc_cpuslocked();\n              cpus_read_unlock();\n            }\n          }\n        }\n        mutex_unlock(&freezer_mutex);\n      }\n    }\n  }\n\nSwap locking order by moving cpus_read_lock() in freezer_apply_state()\nto before mutex_lock(&freezer_mutex) in freezer_change_state()."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "kernel/cgroup/legacy_freezer.c"
                    ],
                    "versions": [
                        {
                            "version": "f5d39b020809146cc28e6e73369bf8065e0310aa",
                            "lessThan": "3756171b97c307d9df8b8ded1d883eec30172085",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "f5d39b020809146cc28e6e73369bf8065e0310aa",
                            "lessThan": "34fbb7b45bae20b551dda24337c7761ca13ce69d",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "f5d39b020809146cc28e6e73369bf8065e0310aa",
                            "lessThan": "57dcd64c7e036299ef526b400a8d12b8a2352f26",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "kernel/cgroup/legacy_freezer.c"
                    ],
                    "versions": [
                        {
                            "version": "6.1",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.1",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.25",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.2.12",
                            "lessThanOrEqual": "6.2.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.3",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
            ],
            "cpeApplicability": [
                {
                    "nodes": [
                        {
                            "operator": "OR",
                            "negate": false,
                            "cpeMatch": [
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.1",
                                    "versionEndExcluding": "6.1.25"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.1",
                                    "versionEndExcluding": "6.2.12"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.1",
                                    "versionEndExcluding": "6.3"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/3756171b97c307d9df8b8ded1d883eec30172085"
                },
                {
                    "url": "https://git.kernel.org/stable/c/34fbb7b45bae20b551dda24337c7761ca13ce69d"
                },
                {
                    "url": "https://git.kernel.org/stable/c/57dcd64c7e036299ef526b400a8d12b8a2352f26"
                }
            ],
            "title": "cgroup,freezer: hold cpu_hotplug_lock before freezer_mutex",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}