CVE-2025-40216

HighCVSS 7.8/10Last modified Oct 19, 2026

Description

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.

Metrics

CVSS 3.1 7.8/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected software

VendorProductVersions
LinuxLinux>= a8edbb424b1391b077407c75d8f5d2ede77aa70d, < 50998b0ae7d9d552e96d8b7239981cf05f65eff5; >= a8edbb424b1391b077407c75d8f5d2ede77aa70d, < f16769241594be59387b56ab525e327f54377e60; >= a8edbb424b1391b077407c75d8f5d2ede77aa70d, < 3a3c6d61577dbb23c09df3e21f6f9eda1ecd634b
LinuxLinux6.12

References

Timeline

Published
Dec 4, 2025
Last modified
Oct 19, 2026
NVD status
Deferred

Related CVEs from 2025

CVE-2025-40217In the Linux kernel, the following vulnerability has been resolved: pidfs: validate extensible ioctls Validate extensible ioctls stricter CVE-2025-40218In the Linux kernel, the following vulnerability has been resolved: mm/damon/vaddr: do not repeat pte_offset_map_lock() until success DAMOCVE-2025-40219In the Linux kernel, the following vulnerability has been resolved: PCI/IOV: Fix race between SR-IOV enable/disable and hotplug Commit 057CVE-2025-40228.8A vulnerability was found in web-arena-x webarena up to 0.2.0. It has been declared as critical. This vulnerability affects the function HTMCVE-2025-40220In the Linux kernel, the following vulnerability has been resolved: fuse: fix livelock in synchronous file put from fuseblk workers I obseCVE-2025-40221In the Linux kernel, the following vulnerability has been resolved: media: pci: mg4b: fix uninitialized iio scan data Fix potential leak oCVE-2025-40222In the Linux kernel, the following vulnerability has been resolved: tty: serial: sh-sci: fix RSCI FIFO overrun handling The receive error CVE-2025-40223In the Linux kernel, the following vulnerability has been resolved: most: usb: Fix use-after-free in hdm_disconnect hdm_disconnect() callsCVE-2025-40224In the Linux kernel, the following vulnerability has been resolved: hwmon: (cgbc-hwmon) Add missing NULL check after devm_kzalloc() The drCVE-2025-40225In the Linux kernel, the following vulnerability has been resolved: drm/panthor: Fix kernel panic on partial unmap of a GPU VA region ThisCVE-2025-40226In the Linux kernel, the following vulnerability has been resolved: firmware: arm_scmi: Account for failed debug initialization When the SCVE-2025-40227In the Linux kernel, the following vulnerability has been resolved: mm/damon/sysfs: dealloc commit test ctx always The damon_ctx for testi
CVE-2025-40216: High severity, CVSS 7.8 | Vulnix