ghsa-825r-gh5g-48mg
Vulnerability from github
Published
2024-04-03 18:30
Modified
2024-06-25 21:31
Details

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

usb: cdns3: fix memory double free when handle zero packet

829 if (request->complete) { 830 spin_unlock(&priv_dev->lock); 831 usb_gadget_giveback_request(&priv_ep->endpoint, 832 request); 833 spin_lock(&priv_dev->lock); 834 } 835 836 if (request->buf == priv_dev->zlp_buf) 837 cdns3_gadget_ep_free_request(&priv_ep->endpoint, request);

Driver append an additional zero packet request when queue a packet, which length mod max packet size is 0. When transfer complete, run to line 831, usb_gadget_giveback_request() will free this requestion. 836 condition is true, so cdns3_gadget_ep_free_request() free this request again.

Log:

[ 1920.140696][ T150] BUG: KFENCE: use-after-free read in cdns3_gadget_giveback+0x134/0x2c0 [cdns3] [ 1920.140696][ T150] [ 1920.151837][ T150] Use-after-free read at 0x000000003d1cd10b (in kfence-#36): [ 1920.159082][ T150] cdns3_gadget_giveback+0x134/0x2c0 [cdns3] [ 1920.164988][ T150] cdns3_transfer_completed+0x438/0x5f8 [cdns3]

Add check at line 829, skip call usb_gadget_giveback_request() if it is additional zero length packet request. Needn't call usb_gadget_giveback_request() because it is allocated in this driver.

Show details on source website


{
  "affected": [],
  "aliases": [
    "CVE-2024-26748"
  ],
  "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: fix memory double free when handle zero packet\n\n829  if (request-\u003ecomplete) {\n830          spin_unlock(\u0026priv_dev-\u003elock);\n831          usb_gadget_giveback_request(\u0026priv_ep-\u003eendpoint,\n832                                    request);\n833          spin_lock(\u0026priv_dev-\u003elock);\n834  }\n835\n836  if (request-\u003ebuf == priv_dev-\u003ezlp_buf)\n837      cdns3_gadget_ep_free_request(\u0026priv_ep-\u003eendpoint, request);\n\nDriver append an additional zero packet request when queue a packet, which\nlength mod max packet size is 0. When transfer complete, run to line 831,\nusb_gadget_giveback_request() will free this requestion. 836 condition is\ntrue, so cdns3_gadget_ep_free_request() free this request again.\n\nLog:\n\n[ 1920.140696][  T150] BUG: KFENCE: use-after-free read in cdns3_gadget_giveback+0x134/0x2c0 [cdns3]\n[ 1920.140696][  T150]\n[ 1920.151837][  T150] Use-after-free read at 0x000000003d1cd10b (in kfence-#36):\n[ 1920.159082][  T150]  cdns3_gadget_giveback+0x134/0x2c0 [cdns3]\n[ 1920.164988][  T150]  cdns3_transfer_completed+0x438/0x5f8 [cdns3]\n\nAdd check at line 829, skip call usb_gadget_giveback_request() if it is\nadditional zero length packet request. Needn\u0027t call\nusb_gadget_giveback_request() because it is allocated in this driver.",
  "id": "GHSA-825r-gh5g-48mg",
  "modified": "2024-06-25T21:31:12Z",
  "published": "2024-04-03T18:30:42Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-26748"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1e204a8e9eb514e22a6567fb340ebb47df3f3a48"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3a2a909942b5335b7ea66366d84261b3ed5f89c8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5fd9e45f1ebcd57181358af28506e8a661a260b3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/70e8038813f9d3e72df966748ebbc40efe466019"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/92d20406a3d4ff3e8be667c79209dc9ed31df5b3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9a52b694b066f299d8b9800854a8503457a8b64c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/aad6132ae6e4809e375431f8defd1521985e44e7"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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