CVE-2026-74471 (GCVE-0-2026-74471)
Vulnerability from cvelistv5
Published
2026-08-15 12:27
Modified
2026-10-16 19:05
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: tracing: Check return value of __register_event() in trace_module_add_events() trace_module_add_events() ignores the return value of __register_event() and unconditionally calls __add_event_to_tracers() for each event. If __register_event() fails (for example, if event_init() fails), the trace_event_call is not added to ftrace_events list, but __add_event_to_tracers() still creates a trace_event_file pointing to it. If module loading subsequently fails and module memory is freed, tracing state retains a stale trace_event_call pointer in trace_event_file, leading to a use-after-free when tracefs or tracing subsystem operations are later executed. Fix this by checking the return value of __register_event() and only calling __add_event_to_tracers() if event registration succeeded.
References
Impacted products
Vendor Product Version
Linux Linux Version: ae63b31e4d0e2ec09c569306ea46f664508ef717
Version: ae63b31e4d0e2ec09c569306ea46f664508ef717
Version: ae63b31e4d0e2ec09c569306ea46f664508ef717
Version: ae63b31e4d0e2ec09c569306ea46f664508ef717
Version: ae63b31e4d0e2ec09c569306ea46f664508ef717
Version: ae63b31e4d0e2ec09c569306ea46f664508ef717
Version: ae63b31e4d0e2ec09c569306ea46f664508ef717
Version: ae63b31e4d0e2ec09c569306ea46f664508ef717
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      "cveMetadata": "{\"cveId\": \"CVE-2026-74471\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-10-16T19:05:47.824Z\", \"dateReserved\": \"2026-08-15T05:44:03.902Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2026-08-15T12:27:08.128Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


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Sightings

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  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
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  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.