cvelist/2024/35xxx/CVE-2024-35991.json

{
    "data_version": "4.0",
    "data_type": "CVE",
    "data_format": "MITRE",
    "CVE_data_meta": {
        "ID": "CVE-2024-35991",
        "ASSIGNER": "cve@kernel.org",
        "STATE": "PUBLIC"
    },
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndmaengine: idxd: Convert spinlock to mutex to lock evl workqueue\n\ndrain_workqueue() cannot be called safely in a spinlocked context due to\npossible task rescheduling. In the multi-task scenario, calling\nqueue_work() while drain_workqueue() will lead to a Call Trace as\npushing a work on a draining workqueue is not permitted in spinlocked\ncontext.\n    Call Trace:\n    <TASK>\n    ? __warn+0x7d/0x140\n    ? __queue_work+0x2b2/0x440\n    ? report_bug+0x1f8/0x200\n    ? handle_bug+0x3c/0x70\n    ? exc_invalid_op+0x18/0x70\n    ? asm_exc_invalid_op+0x1a/0x20\n    ? __queue_work+0x2b2/0x440\n    queue_work_on+0x28/0x30\n    idxd_misc_thread+0x303/0x5a0 [idxd]\n    ? __schedule+0x369/0xb40\n    ? __pfx_irq_thread_fn+0x10/0x10\n    ? irq_thread+0xbc/0x1b0\n    irq_thread_fn+0x21/0x70\n    irq_thread+0x102/0x1b0\n    ? preempt_count_add+0x74/0xa0\n    ? __pfx_irq_thread_dtor+0x10/0x10\n    ? __pfx_irq_thread+0x10/0x10\n    kthread+0x103/0x140\n    ? __pfx_kthread+0x10/0x10\n    ret_from_fork+0x31/0x50\n    ? __pfx_kthread+0x10/0x10\n    ret_from_fork_asm+0x1b/0x30\n    </TASK>\n\nThe current implementation uses a spinlock to protect event log workqueue\nand will lead to the Call Trace due to potential task rescheduling.\n\nTo address the locking issue, convert the spinlock to mutex, allowing\nthe drain_workqueue() to be called in a safe mutex-locked context.\n\nThis change ensures proper synchronization when accessing the event log\nworkqueue, preventing potential Call Trace and improving the overall\nrobustness of the code."
            }
        ]
    },
    "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": "c40bd7d9737b",
                                            "version_value": "758071a35d9f"
                                        },
                                        {
                                            "version_value": "not down converted",
                                            "x_cve_json_5_version_data": {
                                                "versions": [
                                                    {
                                                        "version": "6.4",
                                                        "status": "affected"
                                                    },
                                                    {
                                                        "version": "0",
                                                        "lessThan": "6.4",
                                                        "status": "unaffected",
                                                        "versionType": "semver"
                                                    },
                                                    {
                                                        "version": "6.6.30",
                                                        "lessThanOrEqual": "6.6.*",
                                                        "status": "unaffected",
                                                        "versionType": "semver"
                                                    },
                                                    {
                                                        "version": "6.8.9",
                                                        "lessThanOrEqual": "6.8.*",
                                                        "status": "unaffected",
                                                        "versionType": "semver"
                                                    },
                                                    {
                                                        "version": "6.9",
                                                        "lessThanOrEqual": "*",
                                                        "status": "unaffected",
                                                        "versionType": "original_commit_for_fix"
                                                    }
                                                ],
                                                "defaultStatus": "affected"
                                            }
                                        }
                                    ]
                                }
                            }
                        ]
                    }
                }
            ]
        }
    },
    "references": {
        "reference_data": [
            {
                "url": "https://git.kernel.org/stable/c/758071a35d9f3ffd84ff12169d081412a2f5f098",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/758071a35d9f3ffd84ff12169d081412a2f5f098"
            },
            {
                "url": "https://git.kernel.org/stable/c/c9b732a9f73eadc638abdcf0a6d39bc7a0c1af5f",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/c9b732a9f73eadc638abdcf0a6d39bc7a0c1af5f"
            },
            {
                "url": "https://git.kernel.org/stable/c/d5638de827cff0fce77007e426ec0ffdedf68a44",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/d5638de827cff0fce77007e426ec0ffdedf68a44"
            }
        ]
    },
    "generator": {
        "engine": "bippy-9e1c9544281a"
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