Vulnerability-Lookup

GHSA-4X8G-C253-MRJ2

Vulnerability from github – Published: 2026-01-05 12:30 – Updated: 2026-01-05 12:30

Details

In the Linux kernel, the following vulnerability has been resolved:

rtc: amlogic-a4: fix double free caused by devm

The clock obtained via devm_clk_get_enabled() is automatically managed by devres and will be disabled and freed on driver detach. Manually calling clk_disable_unprepare() in error path and remove function causes double free.

Remove the redundant clk_disable_unprepare() calls from the probe error path and aml_rtc_remove(), allowing the devm framework to automatically manage the clock lifecycle.

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{
  "affected": [],
  "aliases": [
    "CVE-2025-68754"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-01-05T10:15:56Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nrtc: amlogic-a4: fix double free caused by devm\n\nThe clock obtained via devm_clk_get_enabled() is automatically managed\nby devres and will be disabled and freed on driver detach. Manually\ncalling clk_disable_unprepare() in error path and remove function\ncauses double free.\n\nRemove the redundant clk_disable_unprepare() calls from the probe\nerror path and aml_rtc_remove(), allowing the devm framework to\nautomatically manage the clock lifecycle.",
  "id": "GHSA-4x8g-c253-mrj2",
  "modified": "2026-01-05T12:30:28Z",
  "published": "2026-01-05T12:30:28Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-68754"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2e1c79299036614ac32b251d145fad5391f4bcab"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/384150d7a5b60c1086790a8ee07b0629f906cca2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9fed02c16488050cd4e33e045506336b216d7301"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2025-68754 (GCVE-0-2025-68754)

Vulnerability from cvelistv5 – Published: 2026-01-05 09:32 – Updated: 2026-01-05 09:32

Title

rtc: amlogic-a4: fix double free caused by devm

Summary

In the Linux kernel, the following vulnerability has been resolved: rtc: amlogic-a4: fix double free caused by devm The clock obtained via devm_clk_get_enabled() is automatically managed by devres and will be disabled and freed on driver detach. Manually calling clk_disable_unprepare() in error path and remove function causes double free. Remove the redundant clk_disable_unprepare() calls from the probe error path and aml_rtc_remove(), allowing the devm framework to automatically manage the clock lifecycle.

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/9fed02c16488050cd…
	https://git.kernel.org/stable/c/2e1c79299036614ac…
	https://git.kernel.org/stable/c/384150d7a5b60c108…

Impacted products

Vendor

Product

Version

Linux

Affected: c89ac9182ee297597f1c6971045382bae19c3f9d , < 9fed02c16488050cd4e33e045506336b216d7301 (git)
Affected: c89ac9182ee297597f1c6971045382bae19c3f9d , < 2e1c79299036614ac32b251d145fad5391f4bcab (git)
Affected: c89ac9182ee297597f1c6971045382bae19c3f9d , < 384150d7a5b60c1086790a8ee07b0629f906cca2 (git)

Linux

Affected: 6.13
Unaffected: 0 , < 6.13 (semver)
Unaffected: 6.17.13 , ≤ 6.17.* (semver)
Unaffected: 6.18.2 , ≤ 6.18.* (semver)
Unaffected: 6.19-rc1 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/rtc/rtc-amlogic-a4.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "9fed02c16488050cd4e33e045506336b216d7301",
              "status": "affected",
              "version": "c89ac9182ee297597f1c6971045382bae19c3f9d",
              "versionType": "git"
            },
            {
              "lessThan": "2e1c79299036614ac32b251d145fad5391f4bcab",
              "status": "affected",
              "version": "c89ac9182ee297597f1c6971045382bae19c3f9d",
              "versionType": "git"
            },
            {
              "lessThan": "384150d7a5b60c1086790a8ee07b0629f906cca2",
              "status": "affected",
              "version": "c89ac9182ee297597f1c6971045382bae19c3f9d",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/rtc/rtc-amlogic-a4.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.13"
            },
            {
              "lessThan": "6.13",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.17.*",
              "status": "unaffected",
              "version": "6.17.13",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.19-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.17.13",
                  "versionStartIncluding": "6.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.2",
                  "versionStartIncluding": "6.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.19-rc1",
                  "versionStartIncluding": "6.13",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nrtc: amlogic-a4: fix double free caused by devm\n\nThe clock obtained via devm_clk_get_enabled() is automatically managed\nby devres and will be disabled and freed on driver detach. Manually\ncalling clk_disable_unprepare() in error path and remove function\ncauses double free.\n\nRemove the redundant clk_disable_unprepare() calls from the probe\nerror path and aml_rtc_remove(), allowing the devm framework to\nautomatically manage the clock lifecycle."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-01-05T09:32:27.788Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/9fed02c16488050cd4e33e045506336b216d7301"
        },
        {
          "url": "https://git.kernel.org/stable/c/2e1c79299036614ac32b251d145fad5391f4bcab"
        },
        {
          "url": "https://git.kernel.org/stable/c/384150d7a5b60c1086790a8ee07b0629f906cca2"
        }
      ],
      "title": "rtc: amlogic-a4: fix double free caused by devm",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-68754",
    "datePublished": "2026-01-05T09:32:27.788Z",
    "dateReserved": "2025-12-24T10:30:51.033Z",
    "dateUpdated": "2026-01-05T09:32:27.788Z",
    "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-4X8G-C253-MRJ2

CVE-2025-68754 (GCVE-0-2025-68754)

Tags

Sightings

Nomenclature