CVE-2026-93107

/// Technical description

In the Linux kernel, the following vulnerability has been resolved:

RDMA/rxe: Avoid reprocessing the current packet after the QP enters the error state

When do_complete() finds the QP in the error state it returns

RESPST_CHK_RESOURCE. Before commit 49dc9c1f0c7e ("RDMA/rxe: Cleanup

reset state handling in rxe_resp.c") this was the flush loop:

check_resource() had an error-state branch that fetched each remaining

recv WQE and completed it with IB_WC_WR_FLUSH_ERR, without touching

the current packet. That commit removed the error-state branch from

check_resource() (draining is now done at rxe_receiver() entry) but

kept the do_complete() error-state return.

As a result, when a QP moves to the error state while a packet is

being completed - e.g. an rdma_cm disconnect racing with receive

processing - the responder state machine loops back into the request

processing chain with the already-completed packet still in hand:

check_resource() fetches a fresh recv WQE, execute()/send_data_in()

/// Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

/// References