cve-2024-35991
Vulnerability from cvelistv5
Published
2024-05-20 09:47
Modified
2024-08-02 03:30
Severity
Summary
dmaengine: idxd: Convert spinlock to mutex to lock evl workqueue
References
SourceURLTags
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/758071a35d9f3ffd84ff12169d081412a2f5f098
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c9b732a9f73eadc638abdcf0a6d39bc7a0c1af5f
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d5638de827cff0fce77007e426ec0ffdedf68a44
Impacted products
VendorProduct
LinuxLinux
LinuxLinux
Show details on NVD website

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    "cna": {
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          "product": "Linux",
          "programFiles": [
            "drivers/dma/idxd/cdev.c",
            "drivers/dma/idxd/debugfs.c",
            "drivers/dma/idxd/device.c",
            "drivers/dma/idxd/idxd.h",
            "drivers/dma/idxd/init.c",
            "drivers/dma/idxd/irq.c"
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          "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    \u003cTASK\u003e\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    \u003c/TASK\u003e\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."
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        "dateUpdated": "2024-05-29T05:32:33.509Z",
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    "cveId": "CVE-2024-35991",
    "datePublished": "2024-05-20T09:47:56.401Z",
    "dateReserved": "2024-05-17T13:50:33.146Z",
    "dateUpdated": "2024-08-02T03:30:12.585Z",
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    "nvd": "{\"cve\":{\"id\":\"CVE-2024-35991\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-05-20T10:15:13.333\",\"lastModified\":\"2024-05-20T13:00:04.957\",\"vulnStatus\":\"Awaiting Analysis\",\"descriptions\":[{\"lang\":\"en\",\"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    \u003cTASK\u003e\\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    \u003c/TASK\u003e\\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.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: dmaengine: idxd: convertir spinlock a mutex para bloquear evl workqueue. Drain_workqueue() no se puede llamar de forma segura en un contexto de spinlock debido a una posible reprogramaci\u00f3n de tareas. En el escenario de tareas m\u00faltiples, llamar a queue_work() mientras Drain_workqueue() generar\u00e1 un seguimiento de llamadas, ya que no se permite enviar un trabajo a una cola de trabajo agotadora en un contexto de bloqueo por giro. Seguimiento de llamadas:  ? __warn+0x7d/0x140 ? __queue_work+0x2b2/0x440? report_bug+0x1f8/0x200? handle_bug+0x3c/0x70? exc_invalid_op+0x18/0x70? asm_exc_invalid_op+0x1a/0x20? __queue_work+0x2b2/0x440 queue_work_on+0x28/0x30 idxd_misc_thread+0x303/0x5a0 [idxd] ? __schedule+0x369/0xb40? __pfx_irq_thread_fn+0x10/0x10 ? irq_thread+0xbc/0x1b0 irq_thread_fn+0x21/0x70 irq_thread+0x102/0x1b0 ? preempt_count_add+0x74/0xa0? __pfx_irq_thread_dtor+0x10/0x10 ? __pfx_irq_thread+0x10/0x10 kthread+0x103/0x140 ? __pfx_kthread+0x10/0x10 ret_from_fork+0x31/0x50 ? __pfx_kthread+0x10/0x10 ret_from_fork_asm+0x1b/0x30  La implementaci\u00f3n actual utiliza un bloqueo giratorio para proteger la cola de trabajo del registro de eventos y conducir\u00e1 al seguimiento de llamadas debido a una posible reprogramaci\u00f3n de tareas. Para solucionar el problema de bloqueo, convierta el spinlock a mutex, lo que permite llamar a Drain_workqueue() en un contexto seguro con bloqueo mutex. Este cambio garantiza una sincronizaci\u00f3n adecuada al acceder a la cola de trabajo del registro de eventos, lo que evita un posible seguimiento de llamadas y mejora la solidez general del c\u00f3digo.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/758071a35d9f3ffd84ff12169d081412a2f5f098\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/c9b732a9f73eadc638abdcf0a6d39bc7a0c1af5f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/d5638de827cff0fce77007e426ec0ffdedf68a44\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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