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

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00025.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Linux Linux unaffected
Version Status Constraints
21d65b35169112af9b6f873c8eeab972e60107c2 affected < 2cf66428a2545bb33beb9624124a2377468bb478
2c9b5b8326b953f2f48338a7c889e6af457d146f affected < cd542900ee5147028bbe603b238efcab8d720838
bd269188ea94e40ab002cad7b0df8f12b8f0de54 affected < 39761417ea7b654217d6d9085afbf7c87ba3675d
bd269188ea94e40ab002cad7b0df8f12b8f0de54 affected < c44e50f4a0ec00c2298f31f91bc2c3e9bbd81c7e
147d397e08a406f5997f8a1c7f747fe546bf8395 affected —
Linux Linux affected
Version Status Constraints
6.1 affected —
0 unaffected < 6.1
5.15.86 unaffected ≤ 5.15.*
6.0.16 unaffected ≤ 6.0.*
6.1.2 unaffected ≤ 6.1.*
6.2 unaffected ≤ *

No data.

No data.

No data.

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Advisories

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Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://git.kernel.org/stable/c/2cf66428a2545bb33beb9624124a2377468bb478 cve-icon cve-icon
https://git.kernel.org/stable/c/39761417ea7b654217d6d9085afbf7c87ba3675d cve-icon cve-icon
https://git.kernel.org/stable/c/c44e50f4a0ec00c2298f31f91bc2c3e9bbd81c7e cve-icon cve-icon
https://git.kernel.org/stable/c/cd542900ee5147028bbe603b238efcab8d720838 cve-icon cve-icon
https://lore.kernel.org/linux-cve-announce/2025122449-CVE-2022-50744-bc80@gregkh/T cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2022-50744 cve-icon
https://www.cve.org/CVERecord?id=CVE-2022-50744 cve-icon
History

Thu, 25 Dec 2025 00:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

 cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

threat_severity

Moderate

Wed, 24 Dec 2025 13:15:00 +0000

Type Values Removed Values Added
Description 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
Title scsi: lpfc: Fix hard lockup when reading the rx_monitor from debugfs
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-01-02T15:04:22.034Z

Reserved: 2025-12-24T13:02:21.543Z

Link: CVE-2022-50744

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-12-24T13:16:01.120

Modified: 2025-12-29T15:58:34.503

Link: CVE-2022-50744

cve-icon Redhat

Severity : Moderate

Publid Date: 2025-12-24T00:00:00Z

Links: CVE-2022-50744 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses

No weakness.