{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2026-64178",
  "modified": "2026-10-09T11:39:44Z",
  "upstream": [
    "CVE-2026-64178"
  ],
  "published": "2026-07-19T15:41:06Z",
  "summary": "Bluetooth: bnep: Fix UAF read of dev->name",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: bnep: Fix UAF read of dev->name\n\nbnep_add_connection() needs to keep holding the bnep_session_sem while\nreading dev->name (just like bnep_get_connlist() does); otherwise the\nbnep_session() thread can concurrently free the net_device, which can for\nexample be triggered by a concurrent bnep_del_connection().\n\n(This UAF is fairly uninteresting from a security perspective;\ncalling bnep_add_connection() requires passing a capable(CAP_NET_ADMIN)\ncheck. It also requires completely tearing down a netdev during a fairly\ntight race window.)",
  "severity": [
    {
      "type": "CVSS_V3",
      "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
    }
  ],
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      "url": "https://www.cve.org/CVERecord?id=CVE-2026-64178"
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    "upstream_modified": "2026-08-05T13:16:28Z",
    "severity": {
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      "scenario": "AV:A - The bug is in BNEP session setup for Bluetooth PAN; the highest-impact scenario is an adjacent Bluetooth peer on a phone or laptop whose stack calls BNEPCONNADD during PAN bridging, not a generic local syscall path.\nAC:L - The attacker controls disconnect/reconnect timing on the established L2CAP socket and can repeatedly race teardown against bnep_add_connection()'s unprotected strcpy window; UAF races with attacker-controlled concurrency are AC:L.\nPR:N - Exploitation does not require attacker privileges on the victim\u2014only adjacency as the connected Bluetooth peer while the victim's privileged bluetoothd issues BNEPCONNADD; CAP_NET_ADMIN gates the ioctl on the victim side, not the attacker.\nUI:N - Once Bluetooth PAN/tethering is available, the attacker initiates and tears down the connection to drive the race without requiring additional victim action during exploitation.\nS:U - Impact is kernel memory corruption and potential privilege escalation within the host kernel, not crossing into another security authority such as a VM guest or separate sandbox domain.\nC:H - This is a use-after-free read of freed net_device memory via strcpy(dev->name); UAF reads can expose reclaimed slab contents and support further kernel memory disclosure.\nI:H - UAF on a heap-allocated net_device can be leveraged with heap grooming for control-flow or data corruption beyond the immediate bounded name copy.\nA:H - Concurrent free of the net_device during the UAF read can cause kernel oops/panic and denial of service, consistent with UAF availability impact."
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}