CVE-2026-31425 rds: ib: reject FRMR registration before IB connection is established

In the Linux kernel, the following vulnerability has been resolved: rds: ib: reject FRMR registration before IB connection is established rdsibgetmr extracts the rdsibconnection from conn-ctransportdata and passes it to rdsibregfrmr for FRWR memory registration. On a fresh outgoing connection, ic...

CVE-2026-31425

The CVE-2026-31425 issue concerns a Linux kernel RDS path (rds_ib_get_mr/rds_ib_post_reg_frmr) where FRWR/memory registration could dereference a NULL i_cm_id/qp on outgoing connections before rdma_cm_id is established. Connected docs confirm the vulnerability is addressed by patches in several d...