CVE-2025-40216

CVE-2025-40216

High · published December 4, 2025

CVSS v3.1
7.8
EPSS
0%
Percentile
3.2
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.8 · HIGH
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00142 · 3.2th percentile
Published
2025-12-04T20:15Z
References (3)
EPSS history
Timeline
  • 04 DEC 14:14Z
    io_uring/rsrc: don't rely on user vaddr alignment
    cvelistv5