auxdisplay: hd44780: Fix potential memory leak in hd44780_remove()

{
  "id": "d67fa9549143470a77937c7d5c549dda2205ed538b24af1ad34cf904d1bc3961",
  "url": "https://osv.dev/vulnerability/CVE-2022-50830",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "auxdisplay: hd44780: Fix potential memory leak in hd44780_remove()",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: auxdisplay: hd44780: Fix potential memory leak in hd44780_remove() hd44780_probe() allocates a memory chunk for hd with kzalloc() and makes \"lcd->drvdata->hd44780\" point to it. When we call hd44780_remove(), we should release all relevant memory and resource. But \"lcd->drvdata ->hd44780\" is not released, which will lead to a memory leak. We should release the \"lcd->drvdata->hd44780\" in hd44780_remove() to fix the memory leak bug.",
    "evidence": "osv:CVE-2022-50830",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "5.15.100",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.1.18",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.2.5",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2022-50830",
      "aliases": [
        "CVE-2022-50830"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "718e05ed92ecac0d9d3954bcc8064527c3ce7565"
                },
                {
                  "fixed": "8311961a1724bfc64390c539dedc31e067a80315"
                },
                {
                  "fixed": "6cd37f8232f5e169a723e1d5fbe3b2139c2ef763"
                },
                {
                  "fixed": "5d407911e605702ffcc0e97a6db546592ab27dd0"
                },
                {
                  "fixed": "ddf75a86aba2cfb7ec4497e8692b60c8c8fe0ee7"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-50830.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.11.0"
                },
                {
                  "fixed": "5.15.100"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.16.0"
                },
                {
                  "fixed": "6.1.18"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.2.0"
                },
                {
                  "fixed": "6.2.5"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-50830.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:32.537946990Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/5d407911e605702ffcc0e97a6db546592ab27dd0",
        "https://git.kernel.org/stable/c/6cd37f8232f5e169a723e1d5fbe3b2139c2ef763",
        "https://git.kernel.org/stable/c/8311961a1724bfc64390c539dedc31e067a80315",
        "https://git.kernel.org/stable/c/ddf75a86aba2cfb7ec4497e8692b60c8c8fe0ee7",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50830.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2022-50830",
        "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-2022-50830.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2022-50830",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 499702,
  "published_at": "2025-12-30T12:10:52.099+00:00"
}