io_uring/rsrc: don't rely on user vaddr alignment
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.
CVE-2025-40216
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2025-40216
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "a8edbb424b1391b077407c75d8f5d2ede77aa70d",
"lessThan": "50998b0ae7d9d552e96d8b7239981cf05f65eff5",
"versionType": "git"
},
{
"status": "affected",
"version": "a8edbb424b1391b077407c75d8f5d2ede77aa70d",
"lessThan": "f16769241594be59387b56ab525e327f54377e60",
"versionType": "git"
},
{
"status": "affected",
"version": "a8edbb424b1391b077407c75d8f5d2ede77aa70d",
"lessThan": "3a3c6d61577dbb23c09df3e21f6f9eda1ecd634b",
"versionType": "git"
}
],
"programFiles": [
"io_uring/rsrc.c",
"io_uring/rsrc.h"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.12"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.12",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.12.36",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.15.5",
"versionType": "semver",
"lessThanOrEqual": "6.15.*"
},
{
"status": "unaffected",
"version": "6.16",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"io_uring/rsrc.c",
"io_uring/rsrc.h"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2025-40216
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #30697 · Revision 1
- Added to Heist Feed
- Publisher date