{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "9363b4837659d1b7ee04cfa714373ce4b4b8269f"
            },
            {
              "fixed": "e7a33807fb3f87a855993474ac21684ce105927b"
            },
            {
              "fixed": "d733f519f6443540f8359461a34e3b0042099bbe"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.18.0"
            },
            {
              "fixed": "7.0.12"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63977.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndpll: zl3073x: use __dpll_device_change_ntf() and remove change_work\n\nThe change_work was introduced to send device change notifications\nfrom DPLL device callbacks without deadlocking on dpll_lock, since\nthe callbacks are already invoked under that lock. Now that\n__dpll_device_change_ntf() is exported for callers that already\nhold dpll_lock, use it directly and remove the change_work\ninfrastructure entirely.\n\nThis eliminates a race condition where change_work could be\nre-scheduled after cancel_work_sync() during device teardown,\npotentially causing the handler to dereference a freed or NULL\ndpll_dev pointer.",
  "id": "CVE-2026-63977",
  "modified": "2026-07-22T05:30:10.542755580Z",
  "published": "2026-07-19T14:56:01.889Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d733f519f6443540f8359461a34e3b0042099bbe"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e7a33807fb3f87a855993474ac21684ce105927b"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63977.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-63977"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "dpll: zl3073x: use __dpll_device_change_ntf() and remove change_work"
}