github - ghsa-xr5c-xjq3-4hf7

GHSA-XR5C-XJQ3-4HF7

Vulnerability from github – Published: 2025-12-30 15:30 – Updated: 2025-12-30 15:30

Details

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.

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{
  "affected": [],
  "aliases": [
    "CVE-2022-50830"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-12-30T13:15:57Z",
    "severity": null
  },
  "details": "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": "GHSA-xr5c-xjq3-4hf7",
  "modified": "2025-12-30T15:30:27Z",
  "published": "2025-12-30T15:30:27Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-50830"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5d407911e605702ffcc0e97a6db546592ab27dd0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6cd37f8232f5e169a723e1d5fbe3b2139c2ef763"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8311961a1724bfc64390c539dedc31e067a80315"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ddf75a86aba2cfb7ec4497e8692b60c8c8fe0ee7"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

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

Vulnerability from cvelistv5 – Published: 2025-12-30 12:10 – Updated: 2025-12-30 12:10

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

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/8311961a1724bfc64…
	https://git.kernel.org/stable/c/6cd37f8232f5e169a…
	https://git.kernel.org/stable/c/5d407911e605702ff…
	https://git.kernel.org/stable/c/ddf75a86aba2cfb7e…

Impacted products

Vendor

Product

Version

Linux

Affected: 718e05ed92ecac0d9d3954bcc8064527c3ce7565 , < 8311961a1724bfc64390c539dedc31e067a80315 (git)
Affected: 718e05ed92ecac0d9d3954bcc8064527c3ce7565 , < 6cd37f8232f5e169a723e1d5fbe3b2139c2ef763 (git)
Affected: 718e05ed92ecac0d9d3954bcc8064527c3ce7565 , < 5d407911e605702ffcc0e97a6db546592ab27dd0 (git)
Affected: 718e05ed92ecac0d9d3954bcc8064527c3ce7565 , < ddf75a86aba2cfb7ec4497e8692b60c8c8fe0ee7 (git)

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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{
  "containers": {
    "cna": {
      "affected": [
        {
          "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"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.100",
                  "versionStartIncluding": "5.11",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.18",
                  "versionStartIncluding": "5.11",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.2.5",
                  "versionStartIncluding": "5.11",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.3",
                  "versionStartIncluding": "5.11",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "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."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-12-30T12:10:52.099Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/8311961a1724bfc64390c539dedc31e067a80315"
        },
        {
          "url": "https://git.kernel.org/stable/c/6cd37f8232f5e169a723e1d5fbe3b2139c2ef763"
        },
        {
          "url": "https://git.kernel.org/stable/c/5d407911e605702ffcc0e97a6db546592ab27dd0"
        },
        {
          "url": "https://git.kernel.org/stable/c/ddf75a86aba2cfb7ec4497e8692b60c8c8fe0ee7"
        }
      ],
      "title": "auxdisplay: hd44780: Fix potential memory leak in hd44780_remove()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "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"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-XR5C-XJQ3-4HF7

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

Tags

Sightings

Nomenclature