{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-80614",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-08-26T14:34:25.773Z",
        "datePublished": "2026-08-28T06:48:35.720Z",
        "dateUpdated": "2026-10-21T12:46:34.944Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-10-21T12:46:34.944Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: emac: Fix NULL pointer dereference in emac_probe\n\nMove devm_request_irq() after devm_platform_ioremap_resource() so that\ndev->emacp is mapped before the interrupt handler can fire.  An early\ninterrupt hitting emac_irq() would dereference the NULL dev->emacp and\ncrash.\n\nAlso remove redundant error message. devm_platform_ioremap_resource()\nalready returns an error message with dev_err_probe()."
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "version": "3.1",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                        "baseScore": 7.5,
                        "baseSeverity": "HIGH"
                    },
                    "scenarios": [
                        {
                            "lang": "en",
                            "value": "AV:N - IBM EMAC error IRQs are raised by the on-chip Ethernet controller from wire-side events; a remote attacker on the attached network can send Ethernet traffic during emac_probe to assert interrupts that invoke emac_irq() before dev->emacp is ioremap'd.\nAC:L - Once devm_request_irq() registers emac_irq(), any EMAC interrupt fires immediately; an attacker can sustain Ethernet flooding throughout boot/probe, and firmware often leaves the controller active with pending IRQs that hit the narrow pre-ioremap window reliably.\nPR:N - Triggering EMAC hardware interrupts requires only the ability to send Ethernet frames on the connected network segment during driver probe, not local shell access, capabilities, or authenticated sessions.\nUI:N - Exploitation occurs during automatic platform-driver probe at kernel boot or module initialization; no discretionary user action is required beyond the device powering on with its Ethernet port connected.\nS:U - A NULL pointer dereference in the EMAC hard-IRQ handler causes a local kernel oops or panic only; it does not cross VM, container, or IOMMU security boundaries.\nC:N - The bug dereferences a NULL dev->emacp when reading ISR registers via in_be32(), causing an immediate kernel fault with no attacker-controlled memory disclosure or out-of-bounds read.\nI:N - Impact is limited to a NULL pointer fault in hardirq context; there is no heap corruption, arbitrary write, or control-flow hijack primitive beyond the crash itself.\nA:H - A NULL pointer dereference in emac_irq() hard interrupt context causes a kernel oops or panic, rendering the entire system unavailable on affected PowerPC embedded platforms."
                        }
                    ]
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/net/ethernet/ibm/emac/core.c"
                    ],
                    "versions": [
                        {
                            "version": "dcc34ef7c83473222027f475014a2bf8ab798372",
                            "lessThan": "90bb7164878b5e57d447f02c71c238f4f246016a",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "dcc34ef7c83473222027f475014a2bf8ab798372",
                            "lessThan": "a103cdb0681e7185d1b0a12ce6a7c5416c208ccd",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "dcc34ef7c83473222027f475014a2bf8ab798372",
                            "lessThan": "44068b6863fbda78fc810921ddf61642c377b3ca",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "dcc34ef7c83473222027f475014a2bf8ab798372",
                            "lessThan": "f623d38fe6c4e8c40b23f42cc6fe6963fa49997b",
                            "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/net/ethernet/ibm/emac/core.c"
                    ],
                    "versions": [
                        {
                            "version": "6.12",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.12",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.114",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.40",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.1.5",
                            "lessThanOrEqual": "7.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2",
                            "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": "6.12",
                                    "versionEndExcluding": "6.12.114"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.12",
                                    "versionEndExcluding": "6.18.40"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.12",
                                    "versionEndExcluding": "7.1.5"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.12",
                                    "versionEndExcluding": "7.2"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/90bb7164878b5e57d447f02c71c238f4f246016a"
                },
                {
                    "url": "https://git.kernel.org/stable/c/a103cdb0681e7185d1b0a12ce6a7c5416c208ccd"
                },
                {
                    "url": "https://git.kernel.org/stable/c/44068b6863fbda78fc810921ddf61642c377b3ca"
                },
                {
                    "url": "https://git.kernel.org/stable/c/f623d38fe6c4e8c40b23f42cc6fe6963fa49997b"
                }
            ],
            "title": "net: emac: Fix NULL pointer dereference in emac_probe",
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}