CVE-2026-74273
- Source
- https://cve.org/CVERecord?id=CVE-2026-74273
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-74273.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-74273
- Downstream
- Published
- 2026-08-15T05:57:46Z
- Modified
- 2026-08-18T03:31:21Z
- Summary
- cxl/region: Block region delete during region creation
- 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.
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74273.json" }- References
-
- https://git.kernel.org/stable/c/b0b6a9c65cb72c901fdcc6ae83d7afd70cdca1b8
- https://git.kernel.org/stable/c/d91feb88692e81b00cd22f0125cfcd04970b4a0b
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74273.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-74273
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git