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CVE-2021-47577

בינונית 4.7

תיאור (מקור, אנגלית)

In the Linux kernel, the following vulnerability has been resolved: io-wq: check for wq exit after adding new worker task_work We check IO_WQ_BIT_EXIT before attempting to create a new worker, and wq exit cancels pending work if we have any. But it's possible to have a race between the two, where creation checks exit finding it not set, but we're in the process of exiting. The exit side will cancel pending creation task_work, but there's a gap where we add task_work after we've canceled existing creations at exit time. Fix this by checking the EXIT bit post adding the creation task_work. If it's set, run the same cancelation that exit does.

מדדים

CVSS 3.1
4.7 (MEDIUM) מקור הציון: NVD CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS — סבירות ניצול
0% (אחוזון 000) נכון ל-4/8/2026
CWE
CWE-362

מוצרים מושפעים

linux: linux kernel

קישורים