CVE-2025-40364: Linux Kernel

High severity, CVSS 7.8. EPSS: 0.3% chance of exploitation in the next 30 days.

In the Linux kernel, the following vulnerability has been resolved: io_uring: fix io_req_prep_async with provided buffers io_req_prep_async() can import provided buffers, commit the ring state by giving up on that before, it'll be reimported later if needed.

Affected products

• Linux Linux Kernel: from 5.19, before 6.1.129 (fixed in 6.1.129); from 6.2, before 6.6.78 (fixed in 6.6.78); from 6.7, before 6.12.14 (fixed in 6.12.14); from 6.13, before 6.13.3 (fixed in 6.13.3)

Published 2025-04-18. Last modified 2026-07-30.