{
  "affected": [
    {
      "ranges": [
        {
          "events": [
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              "introduced": "871ac1cd4ce4804defcb428cbb003fd84c415ff4"
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          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
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              "introduced": "0"
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          ],
          "type": "ECOSYSTEM"
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          ],
          "type": "ECOSYSTEM"
        },
        {
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              "introduced": "6.7.0"
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            }
          ],
          "type": "ECOSYSTEM"
        },
        {
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              "introduced": "6.13.0"
            },
            {
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            }
          ],
          "type": "ECOSYSTEM"
        },
        {
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          "type": "ECOSYSTEM"
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  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43094.json"
  },
  "details": "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-\u003emac.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.",
  "id": "CVE-2026-43094",
  "modified": "2026-07-15T01:48:57.184361165Z",
  "published": "2026-05-06T07:40:25.930Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1455ff8809843e6e83f1f5b5c0bcc2224c99a3cb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2270ebab53128fb73c4a70a292be09094074737f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/376d74ea03589914fbe2dedcbebf418396c04fd0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4821d563cd7f251ae728be1a6d04af82a294a5b9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4db7b61ec1d1b2b67c0881b62fc4f9583bc21484"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d8a747057a17ffc79e31df1abb11d05e1669d8e5"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43094.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-43094"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.8.0",
  "summary": "ixgbevf: add missing negotiate_features op to Hyper-V ops table"
}