{
  "id": "CVE-2024-41036",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2024-07-29T15:15:12.170",
  "lastModified": "2024-07-29T16:21:52.517",
  "vulnStatus": "Awaiting Analysis",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: ks8851: Fix deadlock with the SPI chip variant\n\nWhen SMP is enabled and spinlocks are actually functional then there is\na deadlock with the 'statelock' spinlock between ks8851_start_xmit_spi\nand ks8851_irq:\n\n    watchdog: BUG: soft lockup - CPU#0 stuck for 27s!\n    call trace:\n      queued_spin_lock_slowpath+0x100/0x284\n      do_raw_spin_lock+0x34/0x44\n      ks8851_start_xmit_spi+0x30/0xb8\n      ks8851_start_xmit+0x14/0x20\n      netdev_start_xmit+0x40/0x6c\n      dev_hard_start_xmit+0x6c/0xbc\n      sch_direct_xmit+0xa4/0x22c\n      __qdisc_run+0x138/0x3fc\n      qdisc_run+0x24/0x3c\n      net_tx_action+0xf8/0x130\n      handle_softirqs+0x1ac/0x1f0\n      __do_softirq+0x14/0x20\n      ____do_softirq+0x10/0x1c\n      call_on_irq_stack+0x3c/0x58\n      do_softirq_own_stack+0x1c/0x28\n      __irq_exit_rcu+0x54/0x9c\n      irq_exit_rcu+0x10/0x1c\n      el1_interrupt+0x38/0x50\n      el1h_64_irq_handler+0x18/0x24\n      el1h_64_irq+0x64/0x68\n      __netif_schedule+0x6c/0x80\n      netif_tx_wake_queue+0x38/0x48\n      ks8851_irq+0xb8/0x2c8\n      irq_thread_fn+0x2c/0x74\n      irq_thread+0x10c/0x1b0\n      kthread+0xc8/0xd8\n      ret_from_fork+0x10/0x20\n\nThis issue has not been identified earlier because tests were done on\na device with SMP disabled and so spinlocks were actually NOPs.\n\nNow use spin_(un)lock_bh for TX queue related locking to avoid execution\nof softirq work synchronously that would lead to a deadlock."
    }
  ],
  "metrics": {},
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/0913ec336a6c0c4a2b296bd9f74f8e41c4c83c8c",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/10fec0cd0e8f56ff06c46bb24254c7d8f8f2bbf0",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/80ece00137300d74642f2038c8fe5440deaf9f05",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/a0c69c492f4a8fad52f0a97565241c926160c9a4",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ]
}