CVE-2026-74272

In the Linux kernel, the following vulnerability has been resolved: cxl/region: Resolve region deletion races Sungwoo noticed that the sysfs trigger to delete a region may try to delete a region multiple times. It also has no exclusion relative to the kernel releasing the region via CXL root device teardown. Instead of installing new cxl root devres actions per region, use the existing root decoder unregistration event to remove all remaining regions. An xarray of regions replaces a devres list of regions. This handles 3 separate issues with the old approach: 1/ sysfs users racing to delete the same region: no longer possible now that the regions_lock is held over the lookup and deletion. 2/ multiple actions triggering deletion of the same region: solved by erasing regions while holding @regions_lock, and only proceeding on successful erasure. 3/ userspace racing devres_release_all() to trigger the devres not found warning: solved by sysfs unregistration not requiring a release action

CVSS

No CVSS.

References

Link	Resource
https://git.kernel.org/stable/c/4dd86ca99ffcc413cbf79063fd9956ef54e0ca91
https://git.kernel.org/stable/c/be44c1c04f85d7b7ac1c597a30b443bbd346acbd

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-15 06:22

Updated : 2026-08-17 06:19

NVD link : CVE-2026-74272

Mitre link : CVE-2026-74272

CVE.ORG link : CVE-2026-74272

JSON object : View

Products Affected

No product.

CWE

No CWE.

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