Vulnerability Description
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.
References
- https://git.kernel.org/stable/c/b0b6a9c65cb72c901fdcc6ae83d7afd70cdca1b8
- https://git.kernel.org/stable/c/d91feb88692e81b00cd22f0125cfcd04970b4a0b
FAQ
What is CVE-2026-74273?
CVE-2026-74273 is a documented vulnerability. 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...
How severe is CVE-2026-74273?
CVSS scoring is not yet available for CVE-2026-74273. Check NVD for updates.
Is there a patch for CVE-2026-74273?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.