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ixgbevf: add missing negotiate_features op to Hyper-V ops table

Type: advisorySource: Official CVE List1 source record

In the Linux kernel, the following vulnerability has been resolved: ixgbevf: add missing negotiate_features op to Hyper-V ops table Commit a7075f501bd3 ("ixgbevf: fix mailbox API compatibility by negotiating supported features") added the .negotiate_features callback to ixgbe_mac_operations and populated it in ixgbevf_mac_ops, but forgot to add it to ixgbevf_hv_mac_ops. This leaves the function pointer NULL on Hyper-V VMs. During probe, ixgbevf_negotiate_api() calls ixgbevf_set_features(), which unconditionally dereferences hw->mac.ops.negotiate_features(). On Hyper-V this results in a NULL pointer dereference: BUG: kernel NULL pointer dereference, address: 0000000000000000 [...] Hardware name: Microsoft Corporation Virtual Machine/Virtual Machine [...] Workqueue: events work_for_cpu_fn RIP: 0010:0x0 [...] Call Trace: ixgbevf_negotiate_api+0x66/0x160 [ixgbevf] ixgbevf_sw_init+0xe4/0x1f0 [ixgbevf] ixgbevf_probe+0x20f/0x4a0 [ixgbevf] local_pci_probe+0x50/0xa0 work_for_cpu_fn+0x1a/0x30 [...] Add ixgbevf_hv_negotiate_features_vf() that returns -EOPNOTSUPP and wire it into ixgbevf_hv_mac_ops. The caller already handles -EOPNOTSUPP gracefully.

Announced Source revision 1
Original source ↗

CVE-2026-43094

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-43094

Linux

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Linux

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "871ac1cd4ce4804defcb428cbb003fd84c415ff4",
        "lessThan": "376d74ea03589914fbe2dedcbebf418396c04fd0",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "2e0aab9ddaf1428602c78f12064cd1e6ffcc4d18",
        "lessThan": "d8a747057a17ffc79e31df1abb11d05e1669d8e5",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "bf580112ed61736c2645a893413a04732505d4b1",
        "lessThan": "2270ebab53128fb73c4a70a292be09094074737f",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "a7075f501bd33c93570af759b6f4302ef0175168",
        "lessThan": "4db7b61ec1d1b2b67c0881b62fc4f9583bc21484",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "a7075f501bd33c93570af759b6f4302ef0175168",
        "lessThan": "1455ff8809843e6e83f1f5b5c0bcc2224c99a3cb",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "a7075f501bd33c93570af759b6f4302ef0175168",
        "lessThan": "4821d563cd7f251ae728be1a6d04af82a294a5b9",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "a376e29b1b196dc90b50df7e5e3947e3026300c4",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "6.1.158",
        "lessThan": "6.1.175",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "6.6.114",
        "lessThan": "6.6.136",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "6.12.55",
        "lessThan": "6.12.83",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "6.17.5",
        "lessThan": "6.18",
        "versionType": "semver"
      }
    ],
    "programFiles": [
      "drivers/net/ethernet/intel/ixgbevf/vf.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "6.18"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "6.18",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "6.1.175",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.136",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.83",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.24",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "6.19.14",
        "versionType": "semver",
        "lessThanOrEqual": "6.19.*"
      },
      {
        "status": "unaffected",
        "version": "7.0",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "drivers/net/ethernet/intel/ixgbevf/vf.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-43094

Source reference: /cveMetadata/cveId

Publisher severity

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Event
#28347 · Revision 1
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