AZL-110426
See a problem?- Import Source
- https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-110426.json
- JSON Data
- https://api.osv.dev/v1/vulns/AZL-110426
- Upstream
- Published
- 2026-08-15T06:22:26Z
- Modified
- 2026-10-25T05:30:37Z
- Summary
- CVE-2026-74273 affecting package kernel 6.6.157.1-1
- Details
-
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