CVE-2022-50830 (GCVE-0-2022-50830)

Vulnerability from cvelistv5 – Published: 2025-12-30 12:10 – Updated: 2025-12-30 12:10
VLAI?
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.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 718e05ed92ecac0d9d3954bcc8064527c3ce7565 , < 8311961a1724bfc64390c539dedc31e067a80315 (git)
Affected: 718e05ed92ecac0d9d3954bcc8064527c3ce7565 , < 6cd37f8232f5e169a723e1d5fbe3b2139c2ef763 (git)
Affected: 718e05ed92ecac0d9d3954bcc8064527c3ce7565 , < 5d407911e605702ffcc0e97a6db546592ab27dd0 (git)
Affected: 718e05ed92ecac0d9d3954bcc8064527c3ce7565 , < ddf75a86aba2cfb7ec4497e8692b60c8c8fe0ee7 (git)
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    Linux Linux Affected: 5.11
Unaffected: 0 , < 5.11 (semver)
Unaffected: 5.15.100 , ≤ 5.15.* (semver)
Unaffected: 6.1.18 , ≤ 6.1.* (semver)
Unaffected: 6.2.5 , ≤ 6.2.* (semver)
Unaffected: 6.3 , ≤ * (original_commit_for_fix)
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{
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          "programFiles": [
            "drivers/auxdisplay/hd44780.c"
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              "negate": false,
              "operator": "OR"
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      "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."
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      "providerMetadata": {
        "dateUpdated": "2025-12-30T12:10:52.099Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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      "title": "auxdisplay: hd44780: Fix potential memory leak in hd44780_remove()",
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    "cveId": "CVE-2022-50830",
    "datePublished": "2025-12-30T12:10:52.099Z",
    "dateReserved": "2025-12-30T12:06:07.132Z",
    "dateUpdated": "2025-12-30T12:10:52.099Z",
    "state": "PUBLISHED"
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  "dataVersion": "5.2",
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  }
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