CVE-2026-64521 (GCVE-0-2026-64521)

Vulnerability from cvelistv5 – Published: 2026-07-25 09:14 – Updated: 2026-07-25 09:14
VLAI
Title
pinctrl: meson: amlogic-a4: fix deadlock issue
Summary
In the Linux kernel, the following vulnerability has been resolved: pinctrl: meson: amlogic-a4: fix deadlock issue Accessing the pinconf-pins sysfs node may deadlock. pinconf_pins_show() holds pctldev->mutex, and the platform driver calls pinctrl_find_gpio_range_from_pin(), which tries to acquire the same mutex again, leading to a deadlock. Use pinctrl_find_gpio_range_from_pin_nolock() to fix this issue.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 6e9be3abb78c2f6c97a51070004a5165702f0ed9 , < e917713f013423069782ff554935c7a5d4266783 (git)
Affected: 6e9be3abb78c2f6c97a51070004a5165702f0ed9 , < 744ac926c0e55267a10b49b5b72582afef4ad49f (git)
Affected: 6e9be3abb78c2f6c97a51070004a5165702f0ed9 , < e72ce029810390eb987a036fb2c8a5da9a23b685 (git)
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Linux Linux Affected: 6.15
Unaffected: 0 , < 6.15 (semver)
Unaffected: 6.18.34 , ≤ 6.18.* (semver)
Unaffected: 7.0.11 , ≤ 7.0.* (semver)
Unaffected: 7.1 , ≤ * (original_commit_for_fix)
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{
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          "programFiles": [
            "drivers/pinctrl/meson/pinctrl-amlogic-a4.c"
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              "operator": "OR"
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      "descriptions": [
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\npinctrl: meson: amlogic-a4: fix deadlock issue\n\nAccessing the pinconf-pins sysfs node may deadlock.\n\npinconf_pins_show() holds pctldev-\u003emutex, and the platform driver\ncalls pinctrl_find_gpio_range_from_pin(), which tries to acquire\nthe same mutex again, leading to a deadlock.\n\nUse pinctrl_find_gpio_range_from_pin_nolock() to fix this issue."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-25T09:14:46.709Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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    "datePublished": "2026-07-25T09:14:46.709Z",
    "dateReserved": "2026-07-19T15:36:31.794Z",
    "dateUpdated": "2026-07-25T09:14:46.709Z",
    "state": "PUBLISHED"
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  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

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.