mtd: Fix device name leak when register device failed in add_mtd_device()

{
  "id": "8de4408032aa2e16d98b7339ec3f255722ac9b8a56078216053a0d2d370a0c7f",
  "url": "https://osv.dev/vulnerability/CVE-2022-50566",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "mtd: Fix device name leak when register device failed in add_mtd_device()",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: mtd: Fix device name leak when register device failed in add_mtd_device() There is a kmemleak when register device failed: unreferenced object 0xffff888101aab550 (size 8): comm \"insmod\", pid 3922, jiffies 4295277753 (age 925.408s) hex dump (first 8 bytes): 6d 74 64 30 00 88 ff ff mtd0.... backtrace: [<00000000bde26724>] __kmalloc_node_track_caller+0x4e/0x150 [<000000003c32b416>] kvasprintf+0xb0/0x130 [<000000001f7a8f15>] kobject_set_name_vargs+0x2f/0xb0 [<000000006e781163>] dev_set_name+0xab/0xe0 [<00000000e30d0c78>] add_mtd_device+0x4bb/0x700 [<00000000f3d34de7>] mtd_device_parse_register+0x2ac/0x3f0 [<00000000c0d88488>] 0xffffffffa0238457 [<00000000b40d0922>] 0xffffffffa02a008f [<0000000023d17b9d>] do_one_initcall+0x87/0x2a0 [<00000000770f6ca6>] do_init_module+0xdf/0x320 [<000000007b6768fe>] load_module+0x2f98/0x3330 [<00000000346bed5a>] __do_sys_finit_module+0x113/0x1b0 [<00000000674c2290>] do_syscall_64+0x35/0x80 [<000000004c6a8d97>] entry_SYSCALL_64_after_hwframe+0x46/0xb0 If register device failed, should call put_device() to give up the reference.",
    "evidence": "osv:CVE-2022-50566",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "4.9.337",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "4.14.303",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "4.19.270",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.4.229",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.10.163",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.15.86",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.0.16",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.1.2",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2022-50566",
      "aliases": [
        "CVE-2022-50566"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
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                  "introduced": "1f24b5a8ecbb2a3c7080f418974d40e3ffedb221"
                },
                {
                  "fixed": "a75f45afa932bfb24a2603ebcea5efd2e7cdcfd6"
                },
                {
                  "fixed": "2302e2dc42b1f84f951c725ce742fc21c5a1e151"
                },
                {
                  "fixed": "db07fe76df01f40cb897d6e9066b84e46957beb3"
                },
                {
                  "fixed": "fa0d32ab8407d7481450c664fd0de64f2dae9489"
                },
                {
                  "fixed": "330bc5533e8a8ed69cb951d5a8edce9bddb9db21"
                },
                {
                  "fixed": "71212d73184845c944ef1b43f092e643e5bde003"
                },
                {
                  "fixed": "1b172fb05d6315ecec082fd7544a3390e96f0d7e"
                },
                {
                  "fixed": "bcabe1dc2a344adbb3382930a23e273ba9382277"
                },
                {
                  "fixed": "895d68a39481a75c680aa421546931fb11942fa6"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-50566.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "2.6.30"
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                {
                  "fixed": "4.9.337"
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            {
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                  "introduced": "5.5.0"
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            },
            {
              "type": "ECOSYSTEM",
              "events": [
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          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-50566.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:33.080374447Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/1b172fb05d6315ecec082fd7544a3390e96f0d7e",
        "https://git.kernel.org/stable/c/2302e2dc42b1f84f951c725ce742fc21c5a1e151",
        "https://git.kernel.org/stable/c/330bc5533e8a8ed69cb951d5a8edce9bddb9db21",
        "https://git.kernel.org/stable/c/71212d73184845c944ef1b43f092e643e5bde003",
        "https://git.kernel.org/stable/c/895d68a39481a75c680aa421546931fb11942fa6",
        "https://git.kernel.org/stable/c/a75f45afa932bfb24a2603ebcea5efd2e7cdcfd6",
        "https://git.kernel.org/stable/c/bcabe1dc2a344adbb3382930a23e273ba9382277",
        "https://git.kernel.org/stable/c/db07fe76df01f40cb897d6e9066b84e46957beb3",
        "https://git.kernel.org/stable/c/fa0d32ab8407d7481450c664fd0de64f2dae9489",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50566.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2022-50566",
        "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-2022-50566.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2022-50566",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 500226,
  "published_at": "2025-10-22T13:23:23.917+00:00"
}