dmaengine: idxd: Fix possible invalid memory access after FLR
In the Linux kernel, the following vulnerability has been resolved: dmaengine: idxd: Fix possible invalid memory access after FLR In the case that the first Function Level Reset (FLR) concludes correctly, but in the second FLR the scratch area for the saved configuration cannot be allocated, it's possible for a invalid memory access to happen. Always set the deallocated scratch area to NULL after FLR completes.
CVE-2026-31442
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-2026-31442
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": "98d187a989036096feaa2fef1ec3b2240ecdeacf",
"lessThan": "504c0e6751001ac46917c73e703f2b1b92cfc026",
"versionType": "git"
},
{
"status": "affected",
"version": "98d187a989036096feaa2fef1ec3b2240ecdeacf",
"lessThan": "867d0c801f21370d561420fa32f2ea1a7dc3a22d",
"versionType": "git"
},
{
"status": "affected",
"version": "98d187a989036096feaa2fef1ec3b2240ecdeacf",
"lessThan": "d6077df7b75d26e4edf98983836c05d00ebabd8d",
"versionType": "git"
}
],
"programFiles": [
"drivers/dma/idxd/init.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.14"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.14",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.18.21",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "6.19.11",
"versionType": "semver",
"lessThanOrEqual": "6.19.*"
},
{
"status": "unaffected",
"version": "7.0",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/dma/idxd/init.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-31442
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #39876 · Revision 1
- Added to Heist Feed
- Publisher date