LiveActive security incident?Get immediate response
CVE Record

CVE-2023-53754: scsi: lpfc: Fix ioremap issues in lpfc_sli4_pci_mem_setup()

In the Linux kernel, the following vulnerability has been resolved: scsi: lpfc: Fix ioremap issues in lpfc_sli4_pci_mem_setup() When if_type equals zero and pci_resource_start(pdev, PCI_64BIT_BAR4) returns false, drbl_regs_memmap_p is not remapped. This passes a NULL pointer to iounmap(), which can trigger a WARN() on certain arches. When if_type equals six and pci_resource_start(pdev, PCI_64BIT_BAR4) returns true, drbl_regs_memmap_p may has been remapped and ctrl_regs_memmap_p is not remapped. This is a resource leak and passes a NULL pointer to iounmap(). To fix these issues, we need to add null checks before iounmap(), and change some goto labels.

UnknownCVSS not scoredNot KEV-listedUpdated
Discuss exposureBack to CVEs
Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

CVE-2023-53754 is a Linux kernel lpfc storage-driver bug. Under specific hardware/resource conditions, cleanup can try to unmap a NULL pointer and can also leak a mapped resource. The source describes WARN behavior and resource leakage, not data theft, privilege escalation, or remote compromise.

Executive priority

Treat as routine kernel maintenance unless critical storage hosts use lpfc hardware. No active exploitation is cited, but storage-driver faults can affect reliability, so patch during the next controlled maintenance window.

Technical view

The issue is in lpfc_sli4_pci_mem_setup(). When if_type and PCI_64BIT_BAR4 resource checks take certain paths, drbl_regs_memmap_p or ctrl_regs_memmap_p may be NULL or leaked before iounmap(). The fix adds NULL checks before iounmap() and adjusts goto cleanup labels.

Likely exposure

Exposure appears limited to Linux systems using the lpfc SCSI/Fibre Channel driver and affected kernel versions or commits. The bundle does not identify distributions, appliances, cloud images, or exact fixed package versions.

Exploitation context

The bundle marks KEV as false and provides no cited evidence of active exploitation or public exploitability. The described impact is local kernel warning/resource-management failure during driver setup paths, but operational impact is not fully scored.

Researcher notes

Evidence is limited to the CVE record and Linux stable commits. No CVSS, CWE, exploit status, or distribution-specific advisories are provided. Avoid over-scoping beyond lpfc and the affected Linux kernel branches named by the CVE data.

Mitigation direction

  • Check your Linux vendor advisory for CVE-2023-53754.
  • Update to a kernel containing the applicable referenced stable fix.
  • Prioritize systems using lpfc Fibre Channel storage adapters.
  • If unavailable, monitor vendor guidance for branch-specific backports.

Validation and detection

  • Inventory kernels and identify systems loading the lpfc driver.
  • Compare kernel source/package changelog against referenced stable commits.
  • Review logs for lpfc initialization warnings on storage hosts.
  • Confirm remediation through vendor package metadata or source commit presence.
Prepared
Confidence
medium
Sources
9

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

cve · low confidence lookup

CVE-2023-53754 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

Open ATT&CK lookup
Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
3Timeline events
0ADP providers
8Source links

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  2. CVE publishedCVE Program

    The CVE record was published.

  3. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinux1351e69fc6db30e186295f1c9495d03cef6a01a2, 1351e69fc6db30e186295f1c9495d03cef6a01a2, 1351e69fc6db30e186295f1c9495d03cef6a01a2, 1351e69fc6db30e186295f1c9495d03cef6a01a2, 1351e69fc6db30e186295f1c9495d03cef6a01a2, 1351e69fc6db30e186295f1c9495d03cef6a01a2, 1351e69fc6db30e186295f1c9495d03cef6a01a2unaffected
LinuxLinux4.17, 0, 5.4.243, 5.10.180, 5.15.111, 6.1.28, 6.2.15, 6.3.2, 6.4affected
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.