arm_mpam: Fix a NULL pointer dereference on unbinding after an error interrupt
In the Linux kernel, the following vulnerability has been resolved: arm_mpam: Fix a NULL pointer dereference on unbinding after an error interrupt If a user unbinds an MSC after mpam_disable() has been run in response to an error interrupt then a dereference of a NULL pointer occurs as mpam_disable() sets the drvdata to NULL. Add an early return to the driver remove callback to avoid this.
CVE-2026-90271
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-2026-90271
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": "f04046f2577a5c76167333ca99d3903ee5331ba0",
"lessThan": "a29044c9c83513c7463de2adb84c169685562ad2",
"versionType": "git"
},
{
"status": "affected",
"version": "f04046f2577a5c76167333ca99d3903ee5331ba0",
"lessThan": "fc996c39689bb15aa80e5366809434f7258fb703",
"versionType": "git"
}
],
"programFiles": [
"drivers/resctrl/mpam_devices.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.19"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.19",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "7.2.6",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/resctrl/mpam_devices.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-90271
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #36630 · Revision 1
- Added to Heist Feed
- Publisher date