scsi: lpfc: Fix hard lockup when reading the rx_monitor from debugfs

{
  "id": "ad63f6857cdbc8db2439a30edbddc83d2e70d30d2a8be2945469ee2337eb9eda",
  "url": "https://osv.dev/vulnerability/CVE-2022-50744",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "scsi: lpfc: Fix hard lockup when reading the rx_monitor from debugfs",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: scsi: lpfc: Fix hard lockup when reading the rx_monitor from debugfs During I/O and simultaneous cat of /sys/kernel/debug/lpfc/fnX/rx_monitor, a hard lockup similar to the call trace below may occur. The spin_lock_bh in lpfc_rx_monitor_report is not protecting from timer interrupts as expected, so change the strength of the spin lock to _irq. Kernel panic - not syncing: Hard LOCKUP CPU: 3 PID: 110402 Comm: cat Kdump: loaded exception RIP: native_queued_spin_lock_slowpath+91 [IRQ stack] native_queued_spin_lock_slowpath at ffffffffb814e30b _raw_spin_lock at ffffffffb89a667a lpfc_rx_monitor_record at ffffffffc0a73a36 [lpfc] lpfc_cmf_timer at ffffffffc0abbc67 [lpfc] __hrtimer_run_queues at ffffffffb8184250 hrtimer_interrupt at ffffffffb8184ab0 smp_apic_timer_interrupt at ffffffffb8a026ba apic_timer_interrupt at ffffffffb8a01c4f [End of IRQ stack] apic_timer_interrupt at ffffffffb8a01c4f lpfc_rx_monitor_report at ffffffffc0a73c80 [lpfc] lpfc_rx_monitor_read at ffffffffc0addde1 [lpfc] full_proxy_read at ffffffffb83e7fc3 vfs_read at ffffffffb833fe71 ksys_read at ffffffffb83402af do_syscall_64 at ffffffffb800430b entry_SYSCALL_64_after_hwframe at ffffffffb8a000ad",
    "evidence": "osv:CVE-2022-50744",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
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            "evidence": "/affected/1/ranges"
          },
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          },
          {
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            "evidence": "/affected/1/ranges"
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    "severity": "unknown",
    "structured": {
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      "aliases": [
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      "modified": "2026-10-08T02:47:50.341118291Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/2cf66428a2545bb33beb9624124a2377468bb478",
        "https://git.kernel.org/stable/c/39761417ea7b654217d6d9085afbf7c87ba3675d",
        "https://git.kernel.org/stable/c/c44e50f4a0ec00c2298f31f91bc2c3e9bbd81c7e",
        "https://git.kernel.org/stable/c/cd542900ee5147028bbe603b238efcab8d720838",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50744.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2022-50744",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50744.json"
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      {
        "value": "CVE-2022-50744",
        "evidence": "/id"
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    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 98235,
  "published_at": "2025-12-24T13:05:41.138+00:00"
}