CVE-2026-68419

The CVE-2026-68419 affects the Linux kernel RDMA/irdma subsystem. When a QP/CQ/SRQ is created, a two-step process allows user-space buffers to be registered with reg_mr via a special ABI flag indicating an invalid mkey. This can enable a user to call rereg_mr on these MR objects and trigger a rea...