CVE-2025-40216
In the Linux kernel, the following vulnerability has been resolved: io_uring/rsrc: don't rely on user vaddr alignment There is no guaranteed alignment for user pointers, however the calculation of an offset of the first page into a folio after coalescing uses some weird bit mask logic, get rid of it.
Affected versions
Linux kernel versions
6.12
and later are affected. Fixed in
6.12.36,
6.15.5,
6.16
and their respective stable series.
References
3 totalFrequently asked questions
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What is CVE-2025-40216?
CVE-2025-40216 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 6.12 onward and has been patched in 6.12.36, 6.15.5 and 6.16. CVE-2025-40216 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2025-40216?
Yes. CVE-2025-40216 has been patched. Fixed versions include 6.12.36, 6.15.5 and 6.16. If you are running Linux kernel 6.12 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2025-40216 actively exploited?
No. CVE-2025-40216 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.