{"id":"CVE-2026-98790","published":"2026-10-18T16:17:32.987","lastModified":"2026-10-19T10:19:43.050","description":"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->ctx->task != current).\n\nSince both task exit and exec paths can call perf_event_exit_task() which\nsets ctx->task to TASK_TOMBSTONE, fix this by explicitly checking if\nevent->ctx->task equals TASK_TOMBSTONE and dropping the redundant\nPF_EXITING check.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":[],"vendors":[],"products":[],"references":[{"url":"https://git.kernel.org/stable/c/524063fea29f8a841e49927ea7a8085194ad3ec2","tags":[]},{"url":"https://git.kernel.org/stable/c/672b8a9ce8f51b991481dfde26fba5cc4340a91a","tags":[]},{"url":"https://git.kernel.org/stable/c/81e61e3f8befa1bae3ec8e779d8ada5e5e362c21","tags":[]},{"url":"https://git.kernel.org/stable/c/ffb684f2aa141eeb0caa6308422e7e05d1ded7c4","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}