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vuln-cve/data/2026/43xxx/CVE-2026-43094.json
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{
"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": "2026-11-06T15:32:31.183Z"
},
"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."
}
],
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{
"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",
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},
{
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"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",
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},
{
"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",
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},
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.18",
"versionEndExcluding": "6.18.24"
},
{
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"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"
}
]
}
]
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],
"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"
}
},
"adp": [
{
"x_adpType": "supplier",
"providerMetadata": {
"orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
"shortName": "siemens-SADP",
"dateUpdated": "2026-10-15T01:19:06.481Z"
},
"affected": [
{
"vendor": "Siemens",
"product": "SIMATIC S7-1500 TM MFP - GNU/Linux subsystem",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "*",
"versionType": "custom"
}
],
"defaultStatus": "unknown"
}
],
"references": [
{
"url": "https://cert-portal.siemens.com/productcert/html/ssa-784472.html"
}
]
},
{
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"id": "CVE-2026-43094",
"role": "CISA Coordinator",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"version": "2.0.3",
"timestamp": "2026-11-06T15:28:26.046237Z"
}
}
}
],
"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2026-11-06T15:32:31.183Z"
}
}
]
}
}