CVE-2024-26746 dmaengine: idxd: Ensure safe user copy of completion record

In the Linux kernel, the following vulnerability has been resolved: dmaengine: idxd: Ensure safe user copy of completion record If CONFIGHARDENEDUSERCOPY is enabled, copying completion record from event log cache to user triggers a kernel bug. 1987.159822 usercopy: Kernel memory exposure attempt...