fkie_cve-2025-40108
Vulnerability from fkie_nvd
Published
2025-11-09 05:15
Modified
2025-11-09 05:15
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: serial: qcom-geni: Fix blocked task Revert commit 1afa70632c39 ("serial: qcom-geni: Enable PM runtime for serial driver") and its dependent commit 86fa39dd6fb7 ("serial: qcom-geni: Enable Serial on SA8255p Qualcomm platforms") because the first one causes regression - hang task on Qualcomm RB1 board (QRB2210) and unable to use serial at all during normal boot: INFO: task kworker/u16:0:12 blocked for more than 42 seconds. Not tainted 6.17.0-rc1-00004-g53e760d89498 #9 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/u16:0 state:D stack:0 pid:12 tgid:12 ppid:2 task_flags:0x4208060 flags:0x00000010 Workqueue: async async_run_entry_fn Call trace: __switch_to+0xe8/0x1a0 (T) __schedule+0x290/0x7c0 schedule+0x34/0x118 rpm_resume+0x14c/0x66c rpm_resume+0x2a4/0x66c rpm_resume+0x2a4/0x66c rpm_resume+0x2a4/0x66c __pm_runtime_resume+0x50/0x9c __driver_probe_device+0x58/0x120 driver_probe_device+0x3c/0x154 __driver_attach_async_helper+0x4c/0xc0 async_run_entry_fn+0x34/0xe0 process_one_work+0x148/0x290 worker_thread+0x2c4/0x3e0 kthread+0x118/0x1c0 ret_from_fork+0x10/0x20 The issue was reported on 12th of August and was ignored by author of commits introducing issue for two weeks. Only after complaining author produced a fix which did not work, so if original commits cannot be reliably fixed for 5 weeks, they obviously are buggy and need to be dropped.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1e810d81769e16637bcd845ba37fbc1eba5d4bd2
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a699213d4e6ef4286348c6439837990f121e0c03
Impacted products
Vendor Product Version


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{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nserial: qcom-geni: Fix blocked task\n\nRevert commit 1afa70632c39 (\"serial: qcom-geni: Enable PM runtime for\nserial driver\") and its dependent commit 86fa39dd6fb7 (\"serial:\nqcom-geni: Enable Serial on SA8255p Qualcomm platforms\") because the\nfirst one causes regression - hang task on Qualcomm RB1 board (QRB2210)\nand unable to use serial at all during normal boot:\n\n  INFO: task kworker/u16:0:12 blocked for more than 42 seconds.\n        Not tainted 6.17.0-rc1-00004-g53e760d89498 #9\n  \"echo 0 \u003e /proc/sys/kernel/hung_task_timeout_secs\" disables this message.\n  task:kworker/u16:0   state:D stack:0     pid:12    tgid:12    ppid:2      task_flags:0x4208060 flags:0x00000010\n  Workqueue: async async_run_entry_fn\n  Call trace:\n   __switch_to+0xe8/0x1a0 (T)\n   __schedule+0x290/0x7c0\n   schedule+0x34/0x118\n   rpm_resume+0x14c/0x66c\n   rpm_resume+0x2a4/0x66c\n   rpm_resume+0x2a4/0x66c\n   rpm_resume+0x2a4/0x66c\n   __pm_runtime_resume+0x50/0x9c\n   __driver_probe_device+0x58/0x120\n   driver_probe_device+0x3c/0x154\n   __driver_attach_async_helper+0x4c/0xc0\n   async_run_entry_fn+0x34/0xe0\n   process_one_work+0x148/0x290\n   worker_thread+0x2c4/0x3e0\n   kthread+0x118/0x1c0\n   ret_from_fork+0x10/0x20\n\nThe issue was reported on 12th of August and was ignored by author of\ncommits introducing issue for two weeks.  Only after complaining author\nproduced a fix which did not work, so if original commits cannot be\nreliably fixed for 5 weeks, they obviously are buggy and need to be\ndropped."
    }
  ],
  "id": "CVE-2025-40108",
  "lastModified": "2025-11-09T05:15:35.580",
  "metrics": {},
  "published": "2025-11-09T05:15:35.580",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/1e810d81769e16637bcd845ba37fbc1eba5d4bd2"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/a699213d4e6ef4286348c6439837990f121e0c03"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}


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