ghsa-9g4f-34x6-x7jf
Vulnerability from github
Published
2024-05-01 15:30
Modified
2024-10-04 18:31
Details

In the Linux kernel, the following vulnerability has been resolved:

thunderbolt: Fix NULL pointer dereference in tb_port_update_credits()

Olliver reported that his system crashes when plugging in Thunderbolt 1 device:

BUG: kernel NULL pointer dereference, address: 0000000000000020 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 0 P4D 0 Oops: 0000 [#1] PREEMPT SMP NOPTI RIP: 0010:tb_port_do_update_credits+0x1b/0x130 [thunderbolt] Call Trace: ? __die+0x23/0x70 ? page_fault_oops+0x171/0x4e0 ? exc_page_fault+0x7f/0x180 ? asm_exc_page_fault+0x26/0x30 ? tb_port_do_update_credits+0x1b/0x130 ? tb_switch_update_link_attributes+0x83/0xd0 tb_switch_add+0x7a2/0xfe0 tb_scan_port+0x236/0x6f0 tb_handle_hotplug+0x6db/0x900 process_one_work+0x171/0x340 worker_thread+0x27b/0x3a0 ? __pfx_worker_thread+0x10/0x10 kthread+0xe5/0x120 ? __pfx_kthread+0x10/0x10 ret_from_fork+0x31/0x50 ? __pfx_kthread+0x10/0x10 ret_from_fork_asm+0x1b/0x30

This is due the fact that some Thunderbolt 1 devices only have one lane adapter. Fix this by checking for the lane 1 before we read its credits.

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{
  "affected": [],
  "aliases": [
    "CVE-2024-27060"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-05-01T13:15:50Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nthunderbolt: Fix NULL pointer dereference in tb_port_update_credits()\n\nOlliver reported that his system crashes when plugging in Thunderbolt 1\ndevice:\n\n BUG: kernel NULL pointer dereference, address: 0000000000000020\n #PF: supervisor read access in kernel mode\n #PF: error_code(0x0000) - not-present page\n PGD 0 P4D 0\n Oops: 0000 [#1] PREEMPT SMP NOPTI\n RIP: 0010:tb_port_do_update_credits+0x1b/0x130 [thunderbolt]\n Call Trace:\n  \u003cTASK\u003e\n  ? __die+0x23/0x70\n  ? page_fault_oops+0x171/0x4e0\n  ? exc_page_fault+0x7f/0x180\n  ? asm_exc_page_fault+0x26/0x30\n  ? tb_port_do_update_credits+0x1b/0x130\n  ? tb_switch_update_link_attributes+0x83/0xd0\n  tb_switch_add+0x7a2/0xfe0\n  tb_scan_port+0x236/0x6f0\n  tb_handle_hotplug+0x6db/0x900\n  process_one_work+0x171/0x340\n  worker_thread+0x27b/0x3a0\n  ? __pfx_worker_thread+0x10/0x10\n  kthread+0xe5/0x120\n  ? __pfx_kthread+0x10/0x10\n  ret_from_fork+0x31/0x50\n  ? __pfx_kthread+0x10/0x10\n  ret_from_fork_asm+0x1b/0x30\n  \u003c/TASK\u003e\n\nThis is due the fact that some Thunderbolt 1 devices only have one lane\nadapter. Fix this by checking for the lane 1 before we read its credits.",
  "id": "GHSA-9g4f-34x6-x7jf",
  "modified": "2024-10-04T18:31:08Z",
  "published": "2024-05-01T15:30:36Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-27060"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/440fba897c5ae32d7df1f1d609dbb19e2bba7fbb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ce64ba1f6ec3439e4b4d880b4db99673f4507228"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d3d17e23d1a0d1f959b4fa55b35f1802d9c584fa"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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