FKIE_CVE-2022-50830

Vulnerability from fkie_nvd - Published: 2025-12-30 13:15 - Updated: 2026-06-17 05:24
Severity
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.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5d407911e605702ffcc0e97a6db546592ab27dd0
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6cd37f8232f5e169a723e1d5fbe3b2139c2ef763
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8311961a1724bfc64390c539dedc31e067a80315
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ddf75a86aba2cfb7ec4497e8692b60c8c8fe0ee7
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/auxdisplay/hd44780.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "8311961a1724bfc64390c539dedc31e067a80315",
              "status": "affected",
              "version": "718e05ed92ecac0d9d3954bcc8064527c3ce7565",
              "versionType": "git"
            },
            {
              "lessThan": "6cd37f8232f5e169a723e1d5fbe3b2139c2ef763",
              "status": "affected",
              "version": "718e05ed92ecac0d9d3954bcc8064527c3ce7565",
              "versionType": "git"
            },
            {
              "lessThan": "5d407911e605702ffcc0e97a6db546592ab27dd0",
              "status": "affected",
              "version": "718e05ed92ecac0d9d3954bcc8064527c3ce7565",
              "versionType": "git"
            },
            {
              "lessThan": "ddf75a86aba2cfb7ec4497e8692b60c8c8fe0ee7",
              "status": "affected",
              "version": "718e05ed92ecac0d9d3954bcc8064527c3ce7565",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/auxdisplay/hd44780.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.11"
            },
            {
              "lessThan": "5.11",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.100",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.18",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.2.*",
              "status": "unaffected",
              "version": "6.2.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nauxdisplay: hd44780: Fix potential memory leak in hd44780_remove()\n\nhd44780_probe() allocates a memory chunk for hd with kzalloc() and\nmakes \"lcd-\u003edrvdata-\u003ehd44780\" point to it. When we call hd44780_remove(),\nwe should release all relevant memory and resource. But \"lcd-\u003edrvdata\n-\u003ehd44780\" is not released, which will lead to a memory leak.\n\nWe should release the \"lcd-\u003edrvdata-\u003ehd44780\" in hd44780_remove() to fix\nthe memory leak bug."
    }
  ],
  "id": "CVE-2022-50830",
  "lastModified": "2026-06-17T05:24:15.743",
  "metrics": {},
  "published": "2025-12-30T13:15:57.490",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/5d407911e605702ffcc0e97a6db546592ab27dd0"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/6cd37f8232f5e169a723e1d5fbe3b2139c2ef763"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/8311961a1724bfc64390c539dedc31e067a80315"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/ddf75a86aba2cfb7ec4497e8692b60c8c8fe0ee7"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Deferred"
}


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