cxl/region: Block region delete during region creation
In the Linux kernel, the following vulnerability has been resolved: cxl/region: Block region delete during region creation Expand the range lock, rename it "regions_lock", to disable region deletion in the critical period between construct_region() and attach_target(), as well as the period between device_add() and registering the remove actions. Otherwise, userspace can confuse the kernel. It can violate the assumption the region stays registered through the completion of cxl_add_to_region(). It can violate the assumption that devm_add_action_or_reset() is working with a live 'struct cxl_region'. It is ok for the region to disappear outside of those windows as that mirrors device hotplug flows where the proper locks are held.
CVE-2026-74273
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-2026-74273
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": "a32320b71f085f8d82afedcf285f1682c8c00aed",
"lessThan": "8efa9fcc1d31b29b31e0ac4efe48624a729796bc",
"versionType": "git"
},
{
"status": "affected",
"version": "a32320b71f085f8d82afedcf285f1682c8c00aed",
"lessThan": "ecc86a28dc27509da511bb3f8c309750233e3177",
"versionType": "git"
},
{
"status": "affected",
"version": "a32320b71f085f8d82afedcf285f1682c8c00aed",
"lessThan": "98c7e206af48b4433b2192cc1a538db2acc49876",
"versionType": "git"
},
{
"status": "affected",
"version": "a32320b71f085f8d82afedcf285f1682c8c00aed",
"lessThan": "b0b6a9c65cb72c901fdcc6ae83d7afd70cdca1b8",
"versionType": "git"
},
{
"status": "affected",
"version": "a32320b71f085f8d82afedcf285f1682c8c00aed",
"lessThan": "d91feb88692e81b00cd22f0125cfcd04970b4a0b",
"versionType": "git"
}
],
"programFiles": [
"drivers/cxl/core/port.c",
"drivers/cxl/core/region.c",
"drivers/cxl/cxl.h"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.3"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.3",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.160",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.114",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.57",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.1.5",
"versionType": "semver",
"lessThanOrEqual": "7.1.*"
},
{
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/cxl/core/port.c",
"drivers/cxl/core/region.c",
"drivers/cxl/cxl.h"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-74273
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #46539 · Revision 1
- Added to Heist Feed
- Publisher date