{
  "schema_version": "1.4.0",
  "id": "GHSA-44g3-hwmh-jx63",
  "modified": "2025-09-15T15:31:29Z",
  "published": "2025-09-15T15:31:29Z",
  "aliases": [
    "CVE-2023-53234"
  ],
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nwatchdog: Fix kmemleak in watchdog_cdev_register\n\nkmemleak reports memory leaks in watchdog_dev_register, as follows:\nunreferenced object 0xffff888116233000 (size 2048):\n  comm \"\"modprobe\"\", pid 28147, jiffies 4353426116 (age 61.741s)\n  hex dump (first 32 bytes):\n    80 fa b9 05 81 88 ff ff 08 30 23 16 81 88 ff ff  .........0#.....\n    08 30 23 16 81 88 ff ff 00 00 00 00 00 00 00 00  .0#.............\n  backtrace:\n    [<000000007f001ffd>] __kmem_cache_alloc_node+0x157/0x220\n    [<000000006a389304>] kmalloc_trace+0x21/0x110\n    [<000000008d640eea>] watchdog_dev_register+0x4e/0x780 [watchdog]\n    [<0000000053c9f248>] __watchdog_register_device+0x4f0/0x680 [watchdog]\n    [<00000000b2979824>] watchdog_register_device+0xd2/0x110 [watchdog]\n    [<000000001f730178>] 0xffffffffc10880ae\n    [<000000007a1a8bcc>] do_one_initcall+0xcb/0x4d0\n    [<00000000b98be325>] do_init_module+0x1ca/0x5f0\n    [<0000000046d08e7c>] load_module+0x6133/0x70f0\n    ...\n\nunreferenced object 0xffff888105b9fa80 (size 16):\n  comm \"\"modprobe\"\", pid 28147, jiffies 4353426116 (age 61.741s)\n  hex dump (first 16 bytes):\n    77 61 74 63 68 64 6f 67 31 00 b9 05 81 88 ff ff  watchdog1.......\n  backtrace:\n    [<000000007f001ffd>] __kmem_cache_alloc_node+0x157/0x220\n    [<00000000486ab89b>] __kmalloc_node_track_caller+0x44/0x1b0\n    [<000000005a39aab0>] kvasprintf+0xb5/0x140\n    [<0000000024806f85>] kvasprintf_const+0x55/0x180\n    [<000000009276cb7f>] kobject_set_name_vargs+0x56/0x150\n    [<00000000a92e820b>] dev_set_name+0xab/0xe0\n    [<00000000cec812c6>] watchdog_dev_register+0x285/0x780 [watchdog]\n    [<0000000053c9f248>] __watchdog_register_device+0x4f0/0x680 [watchdog]\n    [<00000000b2979824>] watchdog_register_device+0xd2/0x110 [watchdog]\n    [<000000001f730178>] 0xffffffffc10880ae\n    [<000000007a1a8bcc>] do_one_initcall+0xcb/0x4d0\n    [<00000000b98be325>] do_init_module+0x1ca/0x5f0\n    [<0000000046d08e7c>] load_module+0x6133/0x70f0\n    ...\n\nThe reason is that put_device is not be called if cdev_device_add fails\nand wdd->id != 0.\n\nwatchdog_cdev_register\n  wd_data = kzalloc                             [1]\n  err = dev_set_name                            [2]\n  ..\n  err = cdev_device_add\n  if (err) {\n    if (wdd->id == 0) {  // wdd->id != 0\n      ..\n    }\n    return err;  // [1],[2] would be leaked\n\nTo fix it, call put_device in all wdd->id cases.",
  "severity": [],
  "affected": [],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-53234"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/13721a2ac66b246f5802ba1b75ad8637e53eeecc"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/23cc41c3f19c4d858c3708f1c0a06e94958e6c3b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/50808d034e199fe3ff7a9d2068a4eebeb6b4098a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/59e391b3fc507a15b7e8e9d9f4de87cae177c366"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8c1655600f4f2839fb844fe8c70b2b65fadc7a56"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ac099d94e0480c937aa9172ab64074981ca1a4d3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bf26b0e430ce34261f45959989edaf680b64d538"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c5a21a5501508ae3afa2fe6d5a3e74a37fa48df3"
    }
  ],
  "database_specific": {
    "cwe_ids": [],
    "severity": null,
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-09-15T15:15:50Z"
  }
}