FKIE_CVE-2025-68333

Vulnerability from fkie_nvd - Published: 2025-12-22 17:16 - Updated: 2025-12-23 14:51
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: sched_ext: Fix possible deadlock in the deferred_irq_workfn() For PREEMPT_RT=y kernels, the deferred_irq_workfn() is executed in the per-cpu irq_work/* task context and not disable-irq, if the rq returned by container_of() is current CPU's rq, the following scenarios may occur: lock(&rq->__lock); <Interrupt> lock(&rq->__lock); This commit use IRQ_WORK_INIT_HARD() to replace init_irq_work() to initialize rq->scx.deferred_irq_work, make the deferred_irq_workfn() is always invoked in hard-irq context.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/600b4379b9a7ba41340d652211fb29699da4c629
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a257e974210320ede524f340ffe16bf4bf0dda1e
Impacted products
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{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsched_ext: Fix possible deadlock in the deferred_irq_workfn()\n\nFor PREEMPT_RT=y kernels, the deferred_irq_workfn() is executed in\nthe per-cpu irq_work/* task context and not disable-irq, if the rq\nreturned by container_of() is current CPU\u0027s rq, the following scenarios\nmay occur:\n\nlock(\u0026rq-\u003e__lock);\n\u003cInterrupt\u003e\n  lock(\u0026rq-\u003e__lock);\n\nThis commit use IRQ_WORK_INIT_HARD() to replace init_irq_work() to\ninitialize rq-\u003escx.deferred_irq_work, make the deferred_irq_workfn()\nis always invoked in hard-irq context."
    }
  ],
  "id": "CVE-2025-68333",
  "lastModified": "2025-12-23T14:51:52.650",
  "metrics": {},
  "published": "2025-12-22T17:16:01.020",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/600b4379b9a7ba41340d652211fb29699da4c629"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/a257e974210320ede524f340ffe16bf4bf0dda1e"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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