CVE-2025-40047 Details
Description
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.
A vulnerability in the Linux kernel's io_uring implementation has been addressed. The issue involved the wait queue management in the 'io_waitid_wait' function. Previously, when a cancellation was in progress, the function would skip removing the wait queue entry, leading to a potential race condition with another callback invocation. This vulnerability affects the Linux kernel stable tree.
Users can upgrade to the latest version of the Linux kernel stable tree, where this vulnerability has been fixed.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Oct 28, 2025References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/2f8229d53d984c6a05b71ac9e9583d4354e3b91f | kernel.org | Source CodeVendor |
| https://git.kernel.org/stable/c/3e2205db2f0608898d535da1964e1b376aacfdaa | kernel.org | Source CodeVendor |
| https://git.kernel.org/stable/c/696ba6032081e617564a8113a001b8d7943cb928 | kernel.org | Source CodeVendor |
Weakness Enumeration
No weakness enumeration is available for this CVE.
Affected Products
| Product | Versions |
|---|---|
| Linux kernel | All versions |
CPE
Remediation
| |
Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 30, 2026 | CVE Modified | kernel.org |
| Jun 17, 2026 | CVE Modified | kernel.org |
| Oct 28, 2025 | New CVE Received | kernel.org |