netdevsim: fix memory leak in nsim_bus_dev_new()

{
  "id": "664f5051423c1e20ab0386c4b43da02d791de55e6b45e3cc8444b2e8be101d93",
  "url": "https://osv.dev/vulnerability/CVE-2022-50772",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "netdevsim: fix memory leak in nsim_bus_dev_new()",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: netdevsim: fix memory leak in nsim_bus_dev_new() If device_register() failed in nsim_bus_dev_new(), the value of reference in nsim_bus_dev->dev is 1. obj->name in nsim_bus_dev->dev will not be released. unreferenced object 0xffff88810352c480 (size 16): comm \"echo\", pid 5691, jiffies 4294945921 (age 133.270s) hex dump (first 16 bytes): 6e 65 74 64 65 76 73 69 6d 31 00 00 00 00 00 00 netdevsim1...... backtrace: [<000000005e2e5e26>] __kmalloc_node_track_caller+0x3a/0xb0 [<0000000094ca4fc8>] kvasprintf+0xc3/0x160 [<00000000aad09bcc>] kvasprintf_const+0x55/0x180 [<000000009bac868d>] kobject_set_name_vargs+0x56/0x150 [<000000007c1a5d70>] dev_set_name+0xbb/0xf0 [<00000000ad0d126b>] device_add+0x1f8/0x1cb0 [<00000000c222ae24>] new_device_store+0x3b6/0x5e0 [<0000000043593421>] bus_attr_store+0x72/0xa0 [<00000000cbb1833a>] sysfs_kf_write+0x106/0x160 [<00000000d0dedb8a>] kernfs_fop_write_iter+0x3a8/0x5a0 [<00000000770b66e2>] vfs_write+0x8f0/0xc80 [<0000000078bb39be>] ksys_write+0x106/0x210 [<00000000005e55a4>] do_syscall_64+0x35/0x80 [<00000000eaa40bbc>] entry_SYSCALL_64_after_hwframe+0x46/0xb0",
    "evidence": "osv:CVE-2022-50772",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.0.7",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2022-50772",
      "aliases": [
        "CVE-2022-50772"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "40e4fe4ce115c409c3e2fbb247085103ef1cc755"
                },
                {
                  "fixed": "77579e4065295071fbd9662f03430dca5b50b086"
                },
                {
                  "fixed": "cf2010aa1c739bab067cbc90b690d28eaa0b47da"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-50772.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.2.0"
                },
                {
                  "fixed": "6.0.7"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-50772.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:25.913489123Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/77579e4065295071fbd9662f03430dca5b50b086",
        "https://git.kernel.org/stable/c/cf2010aa1c739bab067cbc90b690d28eaa0b47da",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50772.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2022-50772",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50772.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2022-50772",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 492614,
  "published_at": "2025-12-24T13:06:01.17+00:00"
}