usb: typec: ucsi: unregister debugfs entries on teardown

{
  "id": "6bce92b847a44ab4ebc09d956384c94d9f0b39b476090a428f4e26f43c1bb5f4",
  "url": "https://osv.dev/vulnerability/CVE-2026-100079",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "usb: typec: ucsi: unregister debugfs entries on teardown",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: usb: typec: ucsi: unregister debugfs entries on teardown ucsi_register() creates per-instance debugfs entries, but ucsi_unregister() keeps them around until ucsi_destroy(). Drivers like ucsi_glink that unregister/register the same UCSI instance across remoteproc restart then try to create an already existing debugfs directory and log: debugfs: 'pmic_glink.ucsi.0' already exists in 'ucsi' Unregister debugfs entries as part of ucsi_unregister(), and clear ucsi->debugfs after freeing it so repeated unregister paths remain safe.",
    "evidence": "osv:CVE-2026-100079",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.6.157",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.12.110",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.18.52",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "7.2.6",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2026-100079",
      "aliases": [
        "CVE-2026-100079"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "df0383ffad64dc09954a60873c1e202b47f08d90"
                },
                {
                  "fixed": "fb7393519908befdc094be4ea913f582adbf2f7c"
                },
                {
                  "fixed": "7177c215e69658adbd2f2fc5b72e14be9208d2ba"
                },
                {
                  "fixed": "1f44d001620fd3caa30619a9bc73e9d15555408b"
                },
                {
                  "fixed": "62efee351566321ad72a4abaf6eb7d972590585d"
                },
                {
                  "fixed": "eed73a65ab609b79d53de88cccc34b36dfe753c4"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-100079.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.6.0"
                },
                {
                  "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"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-100079.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:49.781704328Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/1f44d001620fd3caa30619a9bc73e9d15555408b",
        "https://git.kernel.org/stable/c/62efee351566321ad72a4abaf6eb7d972590585d",
        "https://git.kernel.org/stable/c/7177c215e69658adbd2f2fc5b72e14be9208d2ba",
        "https://git.kernel.org/stable/c/eed73a65ab609b79d53de88cccc34b36dfe753c4",
        "https://git.kernel.org/stable/c/fb7393519908befdc094be4ea913f582adbf2f7c",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/100xxx/CVE-2026-100079.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-100079",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/100xxx/CVE-2026-100079.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-100079",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 518167,
  "published_at": "2026-09-25T13:06:49.915+00:00"
}