CVE-2026-90309

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description An issue exists in the RDMA/erdma component where EQ handlers look up CQs from dev->cq xa and invoke completion or error callbacks outside the xarray lock. This allows erdma destroy cq() to erase the CQ from the xarray and free its queue buffer and doorbell record while a previously scheduled EQ handler is still utilizing the CQ.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.