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

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

https://cvefeed.io/rssfeed/latest.atom / Mon, 12/08/2025 - 04:52
CVE ID : CVE-2023-53754
Published : Dec. 8, 2025, 2:15 a.m. | 29 minutes ago
Description : 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.
Severity: 0.0 | NA
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