{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "6e9be3abb78c2f6c97a51070004a5165702f0ed9"
            },
            {
              "fixed": "e917713f013423069782ff554935c7a5d4266783"
            },
            {
              "fixed": "744ac926c0e55267a10b49b5b72582afef4ad49f"
            },
            {
              "fixed": "e72ce029810390eb987a036fb2c8a5da9a23b685"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.15.0"
            },
            {
              "fixed": "6.18.34"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.0.11"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64521.json"
  },
  "details": "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.",
  "id": "CVE-2026-64521",
  "modified": "2026-07-27T03:56:24.457751549Z",
  "published": "2026-07-25T09:14:46.709Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/744ac926c0e55267a10b49b5b72582afef4ad49f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e72ce029810390eb987a036fb2c8a5da9a23b685"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e917713f013423069782ff554935c7a5d4266783"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64521.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-64521"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.8.0",
  "summary": "pinctrl: meson: amlogic-a4: fix deadlock issue"
}