CVE-2026-74275

Summary

In the Linux kernel, the following vulnerability has been resolved:

cxl/region: Fix out-of-bounds access in cxl_cancel_auto_attach()

In cxl_cancel_auto_attach(), it assumes cxled->pos is a valid index for accessing p->targets[]. However, cxled->pos can be set to negative errno in cxl_region_sort_targets() if cxl_calc_interleave_pos() fails. This causes the driver to use a negative index to access p->targets[], resulting in out-of-bounds access.

Fix it by walking p->targets[] instead of using cxled->pos directly.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux87805c32e6ad7b5ce2d9f7f47e76081857a4a335 < 44b2397eb67b7f728640989a22d062e41f94ab64affected
LinuxLinux87805c32e6ad7b5ce2d9f7f47e76081857a4a335 < cbda6a2c2bec2a5fb30a2ce85baeab15b5fc7db3affected
LinuxLinux7.1affected
LinuxLinux0 < 7.1unaffected
LinuxLinux7.1.5 <= 7.1.*unaffected
LinuxLinux7.2 <= *unaffected

Weaknesses

References