{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2024-43816",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2024-08-17T09:11:59.270Z",
        "datePublished": "2024-08-17T09:21:38.926Z",
        "dateUpdated": "2026-08-05T11:36:38.470Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-08-05T11:36:38.470Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: lpfc: Revise lpfc_prep_embed_io routine with proper endian macro usages\n\nOn big endian architectures, it is possible to run into a memory out of\nbounds pointer dereference when FCP targets are zoned.\n\nIn lpfc_prep_embed_io, the memcpy(ptr, fcp_cmnd, sgl->sge_len) is\nreferencing a little endian formatted sgl->sge_len value.  So, the memcpy\ncan cause big endian systems to crash.\n\nRedefine the *sgl ptr as a struct sli4_sge_le to make it clear that we are\nreferring to a little endian formatted data structure.  And, update the\nroutine with proper le32_to_cpu macro usages."
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "version": "3.1",
                        "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                        "baseScore": 7.8,
                        "baseSeverity": "HIGH"
                    },
                    "scenarios": [
                        {
                            "lang": "en",
                            "value": "AV:L - The oversized length is produced entirely by host-side driver code and is reached by issuing SCSI commands through `lpfc_queuecommand` from local file/block I/O or an SG_IO ioctl on an FC-attached LUN. No remote peer supplies the faulty value, so local access to the system is required.\nAC:L - On an affected big-endian host with an embed-capable SLI4 HBA the byte-swapped length is used on every embedded FCP I/O, so a single ordinary read or write deterministically triggers the copy — no race to win and no memory layout the attacker cannot influence.\nPR:L - Any unprivileged local user with access to a file or device node backed by an lpfc FC LUN reaches the path through normal I/O; 32-byte CDBs (the zoned case) are also emitted for plain reads/writes to a ZBC device without any capability check.\nUI:N - The command is submitted by the attacker's own I/O; no victim action or cooperation is needed.\nS:U - The corruption is confined to kernel memory within the same security authority — there is no VM, IOMMU, or sandbox boundary crossed.\nC:H - The memcpy reads roughly 512–768 MB past the end of the small `fcp_cmnd` DMA buffer, an unbounded out-of-bounds read of arbitrary kernel memory that is then written into the driver's WQE/heap region.\nI:H - This is an unbounded out-of-bounds write starting at `wqe->words[18]` inside `lpfc_cmd->cur_iocbq`, overwriting adjacent slab objects and function pointers with data whose leading bytes (LUN, FCP control, CDB) are attacker-chosen — classic heap-corruption territory for control-flow hijack.\nA:H - A multi-hundred-megabyte wild memcpy inevitably faults on unmapped memory or destroys critical kernel structures, producing a guaranteed oops/panic that can be re-triggered at will."
                        }
                    ]
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/scsi/lpfc/lpfc_sli.c"
                    ],
                    "versions": [
                        {
                            "version": "af20bb73ac2591631d504f3f859f073bcdb7e11e",
                            "lessThan": "9fd003f344d502f65252963169df3dd237054e49",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "af20bb73ac2591631d504f3f859f073bcdb7e11e",
                            "lessThan": "8bc7c617642db6d8d20ee671fb6c4513017e7a7e",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/scsi/lpfc/lpfc_sli.c"
                    ],
                    "versions": [
                        {
                            "version": "6.10",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.10",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.10.3",
                            "lessThanOrEqual": "6.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.11",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
            ],
            "cpeApplicability": [
                {
                    "nodes": [
                        {
                            "operator": "OR",
                            "negate": false,
                            "cpeMatch": [
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.10",
                                    "versionEndExcluding": "6.10.3"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.10",
                                    "versionEndExcluding": "6.11"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/9fd003f344d502f65252963169df3dd237054e49"
                },
                {
                    "url": "https://git.kernel.org/stable/c/8bc7c617642db6d8d20ee671fb6c4513017e7a7e"
                }
            ],
            "title": "scsi: lpfc: Revise lpfc_prep_embed_io routine with proper endian macro usages",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "id": "CVE-2024-43816",
                                "role": "CISA Coordinator",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "Technical Impact": "partial"
                                    }
                                ],
                                "version": "2.0.3",
                                "timestamp": "2024-09-10T16:09:16.258182Z"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2024-09-12T17:33:04.878Z"
                }
            }
        ]
    }
}