{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-43094",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-05-01T14:12:55.984Z",
        "datePublished": "2026-05-06T07:40:25.930Z",
        "dateUpdated": "2026-06-01T16:14:38.068Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-06-01T16:14:38.068Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nixgbevf: add missing negotiate_features op to Hyper-V ops table\n\nCommit a7075f501bd3 (\"ixgbevf: fix mailbox API compatibility by\nnegotiating supported features\") added the .negotiate_features callback\nto ixgbe_mac_operations and populated it in ixgbevf_mac_ops, but forgot\nto add it to ixgbevf_hv_mac_ops. This leaves the function pointer NULL\non Hyper-V VMs.\n\nDuring probe, ixgbevf_negotiate_api() calls ixgbevf_set_features(),\nwhich unconditionally dereferences hw->mac.ops.negotiate_features().\nOn Hyper-V this results in a NULL pointer dereference:\n\n  BUG: kernel NULL pointer dereference, address: 0000000000000000\n  [...]\n  Hardware name: Microsoft Corporation Virtual Machine/Virtual Machine [...]\n  Workqueue: events work_for_cpu_fn\n  RIP: 0010:0x0\n  [...]\n  Call Trace:\n   ixgbevf_negotiate_api+0x66/0x160 [ixgbevf]\n   ixgbevf_sw_init+0xe4/0x1f0 [ixgbevf]\n   ixgbevf_probe+0x20f/0x4a0 [ixgbevf]\n   local_pci_probe+0x50/0xa0\n   work_for_cpu_fn+0x1a/0x30\n   [...]\n\nAdd ixgbevf_hv_negotiate_features_vf() that returns -EOPNOTSUPP and\nwire it into ixgbevf_hv_mac_ops. The caller already handles -EOPNOTSUPP\ngracefully."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/net/ethernet/intel/ixgbevf/vf.c"
                    ],
                    "versions": [
                        {
                            "version": "871ac1cd4ce4804defcb428cbb003fd84c415ff4",
                            "lessThan": "376d74ea03589914fbe2dedcbebf418396c04fd0",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "2e0aab9ddaf1428602c78f12064cd1e6ffcc4d18",
                            "lessThan": "d8a747057a17ffc79e31df1abb11d05e1669d8e5",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "bf580112ed61736c2645a893413a04732505d4b1",
                            "lessThan": "2270ebab53128fb73c4a70a292be09094074737f",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "a7075f501bd33c93570af759b6f4302ef0175168",
                            "lessThan": "4db7b61ec1d1b2b67c0881b62fc4f9583bc21484",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "a7075f501bd33c93570af759b6f4302ef0175168",
                            "lessThan": "1455ff8809843e6e83f1f5b5c0bcc2224c99a3cb",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "a7075f501bd33c93570af759b6f4302ef0175168",
                            "lessThan": "4821d563cd7f251ae728be1a6d04af82a294a5b9",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "a376e29b1b196dc90b50df7e5e3947e3026300c4",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "6.1.158",
                            "lessThan": "6.1.175",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.114",
                            "lessThan": "6.6.136",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.55",
                            "lessThan": "6.12.83",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.17.5",
                            "lessThan": "6.18",
                            "status": "affected",
                            "versionType": "semver"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/net/ethernet/intel/ixgbevf/vf.c"
                    ],
                    "versions": [
                        {
                            "version": "6.18",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.18",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.175",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.136",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.83",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.24",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.19.14",
                            "lessThanOrEqual": "6.19.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.0",
                            "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": "6.1.158",
                                    "versionEndExcluding": "6.1.175"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.6.114",
                                    "versionEndExcluding": "6.6.136"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.12.55",
                                    "versionEndExcluding": "6.12.83"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.18",
                                    "versionEndExcluding": "6.18.24"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.18",
                                    "versionEndExcluding": "6.19.14"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.18",
                                    "versionEndExcluding": "7.0"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.17.5"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/376d74ea03589914fbe2dedcbebf418396c04fd0"
                },
                {
                    "url": "https://git.kernel.org/stable/c/d8a747057a17ffc79e31df1abb11d05e1669d8e5"
                },
                {
                    "url": "https://git.kernel.org/stable/c/2270ebab53128fb73c4a70a292be09094074737f"
                },
                {
                    "url": "https://git.kernel.org/stable/c/4db7b61ec1d1b2b67c0881b62fc4f9583bc21484"
                },
                {
                    "url": "https://git.kernel.org/stable/c/1455ff8809843e6e83f1f5b5c0bcc2224c99a3cb"
                },
                {
                    "url": "https://git.kernel.org/stable/c/4821d563cd7f251ae728be1a6d04af82a294a5b9"
                }
            ],
            "title": "ixgbevf: add missing negotiate_features op to Hyper-V ops table",
            "x_generator": {
                "engine": "bippy-1.2.0"
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        }
    }
}