What happened
In the Linux kernel, the following vulnerability has been resolved: RDMA/irdma: Replace waitqueue and flag with completion The driver previously used a waitqueue along with an explicit request_done flag, but without proper barriers around request_done. An earlier patch by Gui-Dong Han <hanguidong02@gmail.com> attempted to fix this by adding the missing memory barriers. Rather than adding the barriers, this patch replaces the waitqueue+flag with a completion, which is designed for this exact purpose.
Affected versions
Linux: 44d9e52977a1b90b0db1c7f8b197c218e9226520 through before 706591cccdd3ac2c0ddc8c2ed6c89a6be9865826 (git); 44d9e52977a1b90b0db1c7f8b197c218e9226520 through before bde37aed0724c0139dea177f3aae8d989b6babb1 (git); 44d9e52977a1b90b0db1c7f8b197c218e9226520 through before d9c8c45e6d2f438a3c8e643ae78b59454fa0fadd (git); 5.14 Fixed: See vendor advisory.
Why it matters
Review the vendor advisory and exposure of the affected product to determine operational impact.
Detection & mitigation
- Apply vendor-provided updates or mitigations.
- Review affected product exposure and access logs.
Public PoC references
No public PoC reference has passed the current publication threshold.