CVE-2025-40047 Affecting kernel-headers package, versions <0:5.14.0-611.8.1.el9_7


Severity

Recommended
medium

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.02% (5th percentile)

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  • Snyk IDSNYK-ORACLE9-KERNELHEADERS-14138765
  • published27 Nov 2025
  • disclosed28 Oct 2025

Introduced: 28 Oct 2025

NewCVE-2025-40047  (opens in a new tab)

How to fix?

Upgrade Oracle:9 kernel-headers to version 0:5.14.0-611.8.1.el9_7 or higher.
This issue was patched in ELSA-2025-21469.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-headers package and not the kernel-headers package as distributed by Oracle. See How to fix? for Oracle:9 relevant fixed versions and status.

In the Linux kernel, the following vulnerability has been resolved:

io_uring/waitid: always prune wait queue entry in io_waitid_wait()

For a successful return, always remove our entry from the wait queue entry list. Previously this was skipped if a cancelation was in progress, but this can race with another invocation of the wait queue entry callback.

CVSS Base Scores

version 3.1