CVE-2026-97924 (GCVE-0-2026-97924)
Vulnerability from cvelistv5
Published
2026-09-25 10:22
Modified
2026-10-19 09:10
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: tracing/user_events: Don't destroy fields when event removal fails destroy_user_event() destroys the event's fields before attempting to remove the trace event call. If user_event_set_call_visible() fails, e.g. because the event is still enabled and trace_remove_event_call() returns -EBUSY, the event is left registered with an irreversibly destroyed field list. Any subsequent interaction with the event then operates on an empty field list while it is still fully visible in tracefs. Move the field destruction after the call removal, and splice the field list back onto the event when the removal fails so the event remains in a consistent state.
References
Impacted products
Vendor Product Version
Linux Linux Version: 7f5a08c79df35e68f1a43033450c5050f12bc155
Version: 7f5a08c79df35e68f1a43033450c5050f12bc155
Version: 7f5a08c79df35e68f1a43033450c5050f12bc155
Version: 7f5a08c79df35e68f1a43033450c5050f12bc155
Version: 7f5a08c79df35e68f1a43033450c5050f12bc155
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{
  "containers": {
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        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "kernel/trace/trace_events_user.c"
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          "product": "Linux",
          "programFiles": [
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          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "version": "5.18"
            },
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              "version": "0",
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              "status": "unaffected",
              "version": "7.2.7",
              "versionType": "semver"
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              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3",
              "versionType": "original_commit_for_fix"
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          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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              "negate": false,
              "operator": "OR"
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        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntracing/user_events: Don\u0027t destroy fields when event removal fails\n\ndestroy_user_event() destroys the event\u0027s fields before attempting to\nremove the trace event call. If user_event_set_call_visible() fails,\ne.g. because the event is still enabled and trace_remove_event_call()\nreturns -EBUSY, the event is left registered with an irreversibly\ndestroyed field list. Any subsequent interaction with the event then\noperates on an empty field list while it is still fully visible in\ntracefs.\n\nMove the field destruction after the call removal, and splice the\nfield list back onto the event when the removal fails so the event\nremains in a consistent state."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T09:10:51.247Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/a3d9b8b7c8f3627976fe758c77ffd3da260824d7"
        },
        {
          "url": "https://git.kernel.org/stable/c/9c62b7e92b6086a2a0aeb71f3553dd8cf7fdcd8b"
        },
        {
          "url": "https://git.kernel.org/stable/c/0892da2272ec565858aa1ec5458552d699de9142"
        },
        {
          "url": "https://git.kernel.org/stable/c/62d6544e86506bb0695c9594c713cba859666f2f"
        },
        {
          "url": "https://git.kernel.org/stable/c/2deb753127d7b7035e893955c5e91875e767d1f8"
        }
      ],
      "title": "tracing/user_events: Don\u0027t destroy fields when event removal fails",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-97924",
    "datePublished": "2026-09-25T10:22:42.935Z",
    "dateReserved": "2026-09-25T10:18:58.202Z",
    "dateUpdated": "2026-10-19T09:10:51.247Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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