{
    "data_version": "4.0",
    "data_type": "CVE",
    "data_format": "MITRE",
    "CVE_data_meta": {
        "ID": "CVE-2024-41023",
        "ASSIGNER": "cve@kernel.org",
        "STATE": "PUBLIC"
    },
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsched/deadline: Fix task_struct reference leak\n\nDuring the execution of the following stress test with linux-rt:\n\nstress-ng --cyclic 30 --timeout 30 --minimize --quiet\n\nkmemleak frequently reported a memory leak concerning the task_struct:\n\nunreferenced object 0xffff8881305b8000 (size 16136):\n  comm \"stress-ng\", pid 614, jiffies 4294883961 (age 286.412s)\n  object hex dump (first 32 bytes):\n    02 40 00 00 00 00 00 00 00 00 00 00 00 00 00 00  .@..............\n    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................\n  debug hex dump (first 16 bytes):\n    53 09 00 00 00 00 00 00 00 00 00 00 00 00 00 00  S...............\n  backtrace:\n    [<00000000046b6790>] dup_task_struct+0x30/0x540\n    [<00000000c5ca0f0b>] copy_process+0x3d9/0x50e0\n    [<00000000ced59777>] kernel_clone+0xb0/0x770\n    [<00000000a50befdc>] __do_sys_clone+0xb6/0xf0\n    [<000000001dbf2008>] do_syscall_64+0x5d/0xf0\n    [<00000000552900ff>] entry_SYSCALL_64_after_hwframe+0x6e/0x76\n\nThe issue occurs in start_dl_timer(), which increments the task_struct\nreference count and sets a timer. The timer callback, dl_task_timer,\nis supposed to decrement the reference count upon expiration. However,\nif enqueue_task_dl() is called before the timer expires and cancels it,\nthe reference count is not decremented, leading to the leak.\n\nThis patch fixes the reference leak by ensuring the task_struct\nreference count is properly decremented when the timer is canceled."
            }
        ]
    },
    "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": "feff2e65efd8",
                                            "version_value": "7a54d31face6"
                                        },
                                        {
                                            "version_value": "not down converted",
                                            "x_cve_json_5_version_data": {
                                                "versions": [
                                                    {
                                                        "version": "5.10",
                                                        "status": "affected"
                                                    },
                                                    {
                                                        "version": "0",
                                                        "lessThan": "5.10",
                                                        "status": "unaffected",
                                                        "versionType": "semver"
                                                    },
                                                    {
                                                        "version": "6.9.10",
                                                        "lessThanOrEqual": "6.9.*",
                                                        "status": "unaffected",
                                                        "versionType": "semver"
                                                    },
                                                    {
                                                        "version": "6.10",
                                                        "lessThanOrEqual": "*",
                                                        "status": "unaffected",
                                                        "versionType": "original_commit_for_fix"
                                                    }
                                                ],
                                                "defaultStatus": "affected"
                                            }
                                        }
                                    ]
                                }
                            }
                        ]
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    "references": {
        "reference_data": [
            {
                "url": "https://git.kernel.org/stable/c/7a54d31face626f62de415ebe77b43f76c3ffaf4",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/7a54d31face626f62de415ebe77b43f76c3ffaf4"
            },
            {
                "url": "https://git.kernel.org/stable/c/b58652db66c910c2245f5bee7deca41c12d707b9",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/b58652db66c910c2245f5bee7deca41c12d707b9"
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