CVE-2026-98790 (GCVE-0-2026-98790)
Vulnerability from cvelistv5
Published
2026-10-18 15:48
Modified
2026-10-30 12:39
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: perf: Fix race between perf_event_exit_task() and perf_pending_task() A race condition exists between perf_event_exit_task() and perf_pending_task() during begin_new_exec(). During begin_new_exec(), perf_event_exit_task() may be called, and the PF_EXITING flag is not set on task. So perf_sigtrap() continues to execute and triggers WARN_ON_ONCE(event->ctx->task != current). Since both task exit and exec paths can call perf_event_exit_task() which sets ctx->task to TASK_TOMBSTONE, fix this by explicitly checking if event->ctx->task equals TASK_TOMBSTONE and dropping the redundant PF_EXITING check.
References
Impacted products
Vendor Product Version
Linux Linux Version: 97ba62b278674293762c3d91f724f1bb922f04e0
Version: 97ba62b278674293762c3d91f724f1bb922f04e0
Version: 97ba62b278674293762c3d91f724f1bb922f04e0
Version: 97ba62b278674293762c3d91f724f1bb922f04e0
Version: 97ba62b278674293762c3d91f724f1bb922f04e0
Version: 97ba62b278674293762c3d91f724f1bb922f04e0
Version: 97ba62b278674293762c3d91f724f1bb922f04e0
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nperf: Fix race between perf_event_exit_task() and perf_pending_task()\n\nA race condition exists between perf_event_exit_task() and\nperf_pending_task() during begin_new_exec().\n\nDuring begin_new_exec(), perf_event_exit_task() may be called, and the\nPF_EXITING flag is not set on task. So perf_sigtrap() continues to execute\nand triggers WARN_ON_ONCE(event-\u003ectx-\u003etask != current).\n\nSince both task exit and exec paths can call perf_event_exit_task() which\nsets ctx-\u003etask to TASK_TOMBSTONE, fix this by explicitly checking if\nevent-\u003ectx-\u003etask equals TASK_TOMBSTONE and dropping the redundant\nPF_EXITING check."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-30T12:39:50.548Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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          "url": "https://git.kernel.org/stable/c/6e454fbe3e646d119ab75e907035950e0e857c09"
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          "url": "https://git.kernel.org/stable/c/a8a6fe5601fa2d2c0fbfb3e531a1063f73c1eae3"
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        {
          "url": "https://git.kernel.org/stable/c/ffb684f2aa141eeb0caa6308422e7e05d1ded7c4"
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-98790",
    "datePublished": "2026-10-18T15:48:27.412Z",
    "dateReserved": "2026-09-25T10:25:14.370Z",
    "dateUpdated": "2026-10-30T12:39:50.548Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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