{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "b60189e0392fa06348911077ef281eb2b1047b6a"
            },
            {
              "fixed": "420315413b29635de1d4ea4142e410e6465260f3"
            },
            {
              "fixed": "25cc0096efba83b4e0e6fa50f03e9543b41e9d3d"
            },
            {
              "fixed": "b1986595cf827c38ff929e22fbc9ca8f76379306"
            },
            {
              "fixed": "0338c68e22abd2ee509ec2e32508a50896618c32"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.6.0"
            },
            {
              "fixed": "6.12.111"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.53"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.7"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/97xxx/CVE-2026-97963.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: stmmac: initialize ptp_lock at probe time\n\npriv-\u003eptp_lock is only initialized in stmmac_ptp_register(), which runs\nduring __stmmac_open(). However, the lock is also used while the\ninterface is down and has never been opened: tc_taprio_configure()\ninvokes the PTP gettime64() callback to compute the EST base time when\noffloading a TAPRIO schedule, and stmmac_get_time() takes\npriv-\u003eptp_lock. Using an uninitialized rwlock is undefined behaviour.\nMove the rwlock_init() to __stmmac_dvr_probe(), together with the other\nprivate locks, so that ptp_lock is always valid regardless of the\ninterface state.",
  "id": "CVE-2026-97963",
  "modified": "2026-09-27T03:30:41.573390360Z",
  "published": "2026-09-25T10:23:06.749Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0338c68e22abd2ee509ec2e32508a50896618c32"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/25cc0096efba83b4e0e6fa50f03e9543b41e9d3d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/420315413b29635de1d4ea4142e410e6465260f3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b1986595cf827c38ff929e22fbc9ca8f76379306"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/97xxx/CVE-2026-97963.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-97963"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "net: stmmac: initialize ptp_lock at probe time"
}