FKIE_CVE-2026-43017

Vulnerability from fkie_nvd - Published: 2026-05-01 15:16 - Updated: 2026-05-01 15:24
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: MGMT: validate mesh send advertising payload length mesh_send() currently bounds MGMT_OP_MESH_SEND by total command length, but it never verifies that the bytes supplied for the flexible adv_data[] array actually match the embedded adv_data_len field. MGMT_MESH_SEND_SIZE only covers the fixed header, so a truncated command can still pass the existing 20..50 byte range check and later drive the async mesh send path past the end of the queued command buffer. Keep rejecting zero-length and oversized advertising payloads, but validate adv_data_len explicitly and require the command length to exactly match the flexible array size before queueing the request.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0b706fb2294aff3adfd54653bda1b5e356ad4566
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/244b639e6a3a8e26241e201004a3a9f764476631
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/24fa32369cf15d8fc918bdfe94097b12e6acada0
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/562ed1954f0c1bff3422b7b752bd3dacf185edbf
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/bda93eec78cdbfe5cda00785cefebd443e56b88b
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/edb5898cfa91afe7e8f83eda18d93034c953d632
Impacted products
Vendor Product Version
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{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: MGMT: validate mesh send advertising payload length\n\nmesh_send() currently bounds MGMT_OP_MESH_SEND by total command\nlength, but it never verifies that the bytes supplied for the\nflexible adv_data[] array actually match the embedded adv_data_len\nfield. MGMT_MESH_SEND_SIZE only covers the fixed header, so a\ntruncated command can still pass the existing 20..50 byte range\ncheck and later drive the async mesh send path past the end of the\nqueued command buffer.\n\nKeep rejecting zero-length and oversized advertising payloads, but\nvalidate adv_data_len explicitly and require the command length to\nexactly match the flexible array size before queueing the request."
    }
  ],
  "id": "CVE-2026-43017",
  "lastModified": "2026-05-01T15:24:14.893",
  "metrics": {},
  "published": "2026-05-01T15:16:45.837",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/0b706fb2294aff3adfd54653bda1b5e356ad4566"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/244b639e6a3a8e26241e201004a3a9f764476631"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/24fa32369cf15d8fc918bdfe94097b12e6acada0"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/562ed1954f0c1bff3422b7b752bd3dacf185edbf"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/bda93eec78cdbfe5cda00785cefebd443e56b88b"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/edb5898cfa91afe7e8f83eda18d93034c953d632"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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