{
    "data_version": "4.0",
    "data_type": "CVE",
    "data_format": "MITRE",
    "CVE_data_meta": {
        "ID": "CVE-2024-36961",
        "ASSIGNER": "cve@kernel.org",
        "STATE": "PUBLIC"
    },
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nthermal/debugfs: Fix two locking issues with thermal zone debug\n\nWith the current thermal zone locking arrangement in the debugfs code,\nuser space can open the \"mitigations\" file for a thermal zone before\nthe zone's debugfs pointer is set which will result in a NULL pointer\ndereference in tze_seq_start().\n\nMoreover, thermal_debug_tz_remove() is not called under the thermal\nzone lock, so it can run in parallel with the other functions accessing\nthe thermal zone's struct thermal_debugfs object.  Then, it may clear\ntz->debugfs after one of those functions has checked it and the\nstruct thermal_debugfs object may be freed prematurely.\n\nTo address the first problem, pass a pointer to the thermal zone's\nstruct thermal_debugfs object to debugfs_create_file() in\nthermal_debug_tz_add() and make tze_seq_start(), tze_seq_next(),\ntze_seq_stop(), and tze_seq_show() retrieve it from s->private\ninstead of a pointer to the thermal zone object.  This will ensure\nthat tz_debugfs will be valid across the \"mitigations\" file accesses\nuntil thermal_debugfs_remove_id() called by thermal_debug_tz_remove()\nremoves that file.\n\nTo address the second problem, use tz->lock in thermal_debug_tz_remove()\naround the tz->debugfs value check (in case the same thermal zone is\nremoved at the same time in two different threads) and its reset to NULL.\n\nCc :6.8+ <stable@vger.kernel.org> # 6.8+"
            }
        ]
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "n/a"
                    }
                ]
            }
        ]
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "vendor_name": "Linux",
                    "product": {
                        "product_data": [
                            {
                                "product_name": "Linux",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_affected": "<",
                                            "version_name": "7ef01f228c9f",
                                            "version_value": "6c57bdd05054"
                                        },
                                        {
                                            "version_value": "not down converted",
                                            "x_cve_json_5_version_data": {
                                                "versions": [
                                                    {
                                                        "version": "6.8",
                                                        "status": "affected"
                                                    },
                                                    {
                                                        "version": "0",
                                                        "lessThan": "6.8",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "6.8.10",
                                                        "lessThanOrEqual": "6.8.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "6.9",
                                                        "lessThanOrEqual": "*",
                                                        "status": "unaffected",
                                                        "versionType": "original_commit_for_fix"
                                                    }
                                                ],
                                                "defaultStatus": "affected"
                                            }
                                        }
                                    ]
                                }
                            }
                        ]
                    }
                }
            ]
        }
    },
    "references": {
        "reference_data": [
            {
                "url": "https://git.kernel.org/stable/c/6c57bdd0505422d5ccd2df541d993aec978c842e",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/6c57bdd0505422d5ccd2df541d993aec978c842e"
            },
            {
                "url": "https://git.kernel.org/stable/c/c7f7c37271787a7f77d7eedc132b0b419a76b4c8",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/c7f7c37271787a7f77d7eedc132b0b419a76b4c8"
            }
        ]
    },
    "generator": {
        "engine": "bippy-a5840b7849dd"
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}