CVE-2022-50827
Unknown Unknown - Not Provided
Memory Leak in Linux Kernel SCSI lpfc_create_port Function

Publication date: 2025-12-30

Last updated on: 2025-12-30

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: scsi: lpfc: Fix memory leak in lpfc_create_port() Commit 5e633302ace1 ("scsi: lpfc: vmid: Add support for VMID in mailbox command") introduced allocations for the VMID resources in lpfc_create_port() after the call to scsi_host_alloc(). Upon failure on the VMID allocations, the new code would branch to the 'out' label, which returns NULL without unwinding anything, thus skipping the call to scsi_host_put(). Fix the problem by creating a separate label 'out_free_vmid' to unwind the VMID resources and make the 'out_put_shost' label call only scsi_host_put(), as was done before the introduction of allocations for VMID.
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Meta Information
Published
2025-12-30
Last Modified
2025-12-30
Generated
2026-06-16
AI Q&A
2025-12-30
EPSS Evaluated
2026-06-15
NVD
CVE-2022-50827
EUVD
EUVD-2022-55871
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
linux linux_kernel *
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Exploitability
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CWE ID Description
CWE-UNKNOWN
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Executive Summary

This vulnerability is a memory leak in the Linux kernel's lpfc driver, specifically in the lpfc_create_port() function. A recent code change introduced allocations for VMID resources after scsi_host_alloc(). If the VMID allocation fails, the code returns early without properly releasing previously allocated resources, causing a memory leak. The fix involves adding a separate cleanup path to properly free VMID resources on failure.

Impact Analysis

The memory leak caused by this vulnerability can lead to increased memory usage and potential resource exhaustion on systems using the affected Linux kernel lpfc driver. Over time, this could degrade system performance or stability, especially in environments with frequent port creation failures.

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