drm/xe: Open-code GGTT MMIO access protection
In the Linux kernel, the following vulnerability has been resolved: drm/xe: Open-code GGTT MMIO access protection GGTT MMIO access is currently protected by hotplug (drm_dev_enter), which works correctly when the driver loads successfully and is later unbound or unloaded. However, if driver load fails, this protection is insufficient because drm_dev_unplug() is never called. Additionally, devm release functions cannot guarantee that all BOs with GGTT mappings are destroyed before the GGTT MMIO region is removed, as some BOs may be freed asynchronously by worker threads. To address this, introduce an open-coded flag, protected by the GGTT lock, that guards GGTT MMIO access. The flag is cleared during the dev_fini_ggtt devm release function to ensure MMIO access is disabled once teardown begins. (cherry picked from commit 4f3a998a173b4325c2efd90bdadc6ccd3ad9a431)
CVE-2026-23466
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-2026-23466
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": "919bb54e989c1edef87e9797be125c94c450fc65",
"lessThan": "e2b424aadecb640f9e037b2891191cf8fd4c64cf",
"versionType": "git"
},
{
"status": "affected",
"version": "919bb54e989c1edef87e9797be125c94c450fc65",
"lessThan": "1e9e2640d870d4837bcfdc220cb2c99ae5ee119f",
"versionType": "git"
},
{
"status": "affected",
"version": "919bb54e989c1edef87e9797be125c94c450fc65",
"lessThan": "76326dc06d8793c2c81c31cc0115dbc348de2f88",
"versionType": "git"
},
{
"status": "affected",
"version": "919bb54e989c1edef87e9797be125c94c450fc65",
"lessThan": "01f2557aa684e514005541e71a3d01f4cd45c170",
"versionType": "git"
}
],
"programFiles": [
"drivers/gpu/drm/xe/xe_ggtt.c",
"drivers/gpu/drm/xe/xe_ggtt_types.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": "6.12.78",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.20",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "6.19.10",
"versionType": "semver",
"lessThanOrEqual": "6.19.*"
},
{
"status": "unaffected",
"version": "7.0",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/gpu/drm/xe/xe_ggtt.c",
"drivers/gpu/drm/xe/xe_ggtt_types.h"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-23466
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #39862 · Revision 1
- Added to Heist Feed
- Publisher date