ghsa-2wr3-6ffm-mq44
Vulnerability from github
Published
2025-09-15 15:31
Modified
2025-09-15 15:31
Details

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

wwan_hwsim: fix possible memory leak in wwan_hwsim_dev_new()

Inject fault while probing module, if device_register() fails, but the refcount of kobject is not decreased to 0, the name allocated in dev_set_name() is leaked. Fix this by calling put_device(), so that name can be freed in callback function kobject_cleanup().

unreferenced object 0xffff88810152ad20 (size 8): comm "modprobe", pid 252, jiffies 4294849206 (age 22.713s) hex dump (first 8 bytes): 68 77 73 69 6d 30 00 ff hwsim0.. backtrace: [<000000009c3504ed>] __kmalloc_node_track_caller+0x44/0x1b0 [<00000000c0228a5e>] kvasprintf+0xb5/0x140 [<00000000cff8c21f>] kvasprintf_const+0x55/0x180 [<0000000055a1e073>] kobject_set_name_vargs+0x56/0x150 [<000000000a80b139>] dev_set_name+0xab/0xe0

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{
  "affected": [],
  "aliases": [
    "CVE-2022-50331"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-09-15T15:15:45Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nwwan_hwsim: fix possible memory leak in wwan_hwsim_dev_new()\n\nInject fault while probing module, if device_register() fails,\nbut the refcount of kobject is not decreased to 0, the name\nallocated in dev_set_name() is leaked. Fix this by calling\nput_device(), so that name can be freed in callback function\nkobject_cleanup().\n\nunreferenced object 0xffff88810152ad20 (size 8):\n  comm \"modprobe\", pid 252, jiffies 4294849206 (age 22.713s)\n  hex dump (first 8 bytes):\n    68 77 73 69 6d 30 00 ff                          hwsim0..\n  backtrace:\n    [\u003c000000009c3504ed\u003e] __kmalloc_node_track_caller+0x44/0x1b0\n    [\u003c00000000c0228a5e\u003e] kvasprintf+0xb5/0x140\n    [\u003c00000000cff8c21f\u003e] kvasprintf_const+0x55/0x180\n    [\u003c0000000055a1e073\u003e] kobject_set_name_vargs+0x56/0x150\n    [\u003c000000000a80b139\u003e] dev_set_name+0xab/0xe0",
  "id": "GHSA-2wr3-6ffm-mq44",
  "modified": "2025-09-15T15:31:27Z",
  "published": "2025-09-15T15:31:27Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-50331"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/258ad2fe5ede773625adfda88b173f4123e59f45"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/50c31fa952309536c6e4461ff815ddccc8dff9d5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d87973314aba6de80a49f4271dd9be4ddc08e729"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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