tracing: Don't dereference trace_event_file in deferred trigger free

{
  "id": "a2a96ca05b7444c31d0af5371aad70f381b8ec07730fa1ba994b53efb6c07f20",
  "url": "https://osv.dev/vulnerability/CVE-2026-97932",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "tracing: Don't dereference trace_event_file in deferred trigger free",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: tracing: Don't dereference trace_event_file in deferred trigger free The enable_event trigger defers trace_event_put_ref() to the trigger free kthread, but the trace_event_file can already be freed when the instance is removed. Keep the trace_event_call directly in enable_trigger_data so the deferred free does not access the freed trace_event_file.",
    "evidence": "osv:CVE-2026-97932",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "7.2.7",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2026-97932",
      "aliases": [
        "CVE-2026-97932"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "e091351b38818ef620d27f44f4bfd625f13afbff"
                },
                {
                  "fixed": "67fb91a7f7bb1d958cf9cc249c912bca9b2fc821"
                },
                {
                  "fixed": "bcfe2816e6ec46c3f4c58aa4264476665ddb3f69"
                }
              ]
            },
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "7.1.6"
                },
                {
                  "fixed": "7.2"
                }
              ]
            },
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "159fdc3e01dca5fdbc412fcd8b239895733a270d"
                }
              ]
            }
          ],
          "versions": [
            "v7.1.13",
            "v7.1.12",
            "v7.1.11",
            "v7.1.10",
            "v7.1.9",
            "v7.1.8",
            "v7.1.7",
            "v7.1.6"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-97932.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "7.2.0"
                },
                {
                  "fixed": "7.2.7"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-97932.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:26.532616861Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/67fb91a7f7bb1d958cf9cc249c912bca9b2fc821",
        "https://git.kernel.org/stable/c/bcfe2816e6ec46c3f4c58aa4264476665ddb3f69",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/97xxx/CVE-2026-97932.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-97932",
        "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/2026/97xxx/CVE-2026-97932.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-97932",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 493128,
  "published_at": "2026-09-25T10:22:47.994+00:00"
}