{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "c1a752ba2d6b8a52879c7ab637cff38359ea9827"
            },
            {
              "fixed": "fb1de260033c215dba438973d82b48562bdc86bb"
            },
            {
              "fixed": "e9e64dd02fd68776afda00777591eca0c3984285"
            },
            {
              "fixed": "33a44333a9dfda044b0e233399b12ead7f8a90ae"
            },
            {
              "fixed": "d331c63570af61ef7aaf516b64a8d6f47518a3a4"
            },
            {
              "fixed": "a83fcddf3c75d004f12aa13555bb73da19fb75a9"
            },
            {
              "fixed": "4f6bd79bb7e55095f09bec9b4eb6c09df1306116"
            },
            {
              "fixed": "5c5a795bf6248fe96f96dd9fd79d66bbb4a92077"
            },
            {
              "fixed": "6645856f0df3aeecd45519cb611415b4b89c2223"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.3.0"
            },
            {
              "fixed": "5.10.270"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.221"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.188"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.157"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.110"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.52"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90334.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ntty: clear cdev pointer after cdev_add() failure\n\ntty_cdev_add() drops the cdev reference when cdev_add() fails, but\nleaves driver-\u003ecdevs[index] pointing to freed memory.\ntty_unregister_device() later passes that stale pointer to cdev_del(),\ncausing a use-after-free.\n\nClear the slot after dropping the reference.",
  "id": "CVE-2026-90334",
  "modified": "2026-09-19T03:31:00.673747576Z",
  "published": "2026-09-17T16:08:47.462Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/33a44333a9dfda044b0e233399b12ead7f8a90ae"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4f6bd79bb7e55095f09bec9b4eb6c09df1306116"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5c5a795bf6248fe96f96dd9fd79d66bbb4a92077"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6645856f0df3aeecd45519cb611415b4b89c2223"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a83fcddf3c75d004f12aa13555bb73da19fb75a9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d331c63570af61ef7aaf516b64a8d6f47518a3a4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e9e64dd02fd68776afda00777591eca0c3984285"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fb1de260033c215dba438973d82b48562bdc86bb"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90334.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-90334"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "tty: clear cdev pointer after cdev_add() failure"
}