ghsa-7257-c3g3-gcf6
Vulnerability from github
Published
2024-04-03 18:30
Modified
2024-06-26 00:31
Details

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

usb: cdns3: fixed memory use after free at cdns3_gadget_ep_disable()

... cdns3_gadget_ep_free_request(&priv_ep->endpoint, &priv_req->request); list_del_init(&priv_req->list); ...

'priv_req' actually free at cdns3_gadget_ep_free_request(). But list_del_init() use priv_req->list after it.

[ 1542.642868][ T534] BUG: KFENCE: use-after-free read in __list_del_entry_valid+0x10/0xd4 [ 1542.642868][ T534] [ 1542.653162][ T534] Use-after-free read at 0x000000009ed0ba99 (in kfence-#3): [ 1542.660311][ T534] __list_del_entry_valid+0x10/0xd4 [ 1542.665375][ T534] cdns3_gadget_ep_disable+0x1f8/0x388 [cdns3] [ 1542.671571][ T534] usb_ep_disable+0x44/0xe4 [ 1542.675948][ T534] ffs_func_eps_disable+0x64/0xc8 [ 1542.680839][ T534] ffs_func_set_alt+0x74/0x368 [ 1542.685478][ T534] ffs_func_disable+0x18/0x28

Move list_del_init() before cdns3_gadget_ep_free_request() to resolve this problem.

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{
  "affected": [],
  "aliases": [
    "CVE-2024-26749"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-04-03T17:15:51Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: cdns3: fixed memory use after free at cdns3_gadget_ep_disable()\n\n  ...\n  cdns3_gadget_ep_free_request(\u0026priv_ep-\u003eendpoint, \u0026priv_req-\u003erequest);\n  list_del_init(\u0026priv_req-\u003elist);\n  ...\n\n\u0027priv_req\u0027 actually free at cdns3_gadget_ep_free_request(). But\nlist_del_init() use priv_req-\u003elist after it.\n\n[ 1542.642868][  T534] BUG: KFENCE: use-after-free read in __list_del_entry_valid+0x10/0xd4\n[ 1542.642868][  T534]\n[ 1542.653162][  T534] Use-after-free read at 0x000000009ed0ba99 (in kfence-#3):\n[ 1542.660311][  T534]  __list_del_entry_valid+0x10/0xd4\n[ 1542.665375][  T534]  cdns3_gadget_ep_disable+0x1f8/0x388 [cdns3]\n[ 1542.671571][  T534]  usb_ep_disable+0x44/0xe4\n[ 1542.675948][  T534]  ffs_func_eps_disable+0x64/0xc8\n[ 1542.680839][  T534]  ffs_func_set_alt+0x74/0x368\n[ 1542.685478][  T534]  ffs_func_disable+0x18/0x28\n\nMove list_del_init() before cdns3_gadget_ep_free_request() to resolve this\nproblem.",
  "id": "GHSA-7257-c3g3-gcf6",
  "modified": "2024-06-26T00:31:36Z",
  "published": "2024-04-03T18:30:42Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-26749"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2134e9906e17b1e5284300fab547869ebacfd7d9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/29e42e1578a10c611b3f1a38f3229b2d664b5d16"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4e5c73b15d95452c1ba9c771dd013a3fbe052ff3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9a07244f614bc417de527b799da779dcae780b5d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b40328eea93c75a5645891408010141a0159f643"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cd45f99034b0c8c9cb346dd0d6407a95ca3d36f6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cfa9abb5570c489dabf6f7fb3a066cc576fc8824"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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