CVE-2026-97477

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

RDMA/counter: Fix num_counters leak on bind_qp failure in alloc_and_bind()

When __rdma_counter_bind_qp() fails in alloc_and_bind(), the error path

jumps to err_mode which frees the counter without decrementing

port_counter->num_counters. The only place that decrements is

rdma_counter_free(), which is unreachable since the counter was never

successfully bound.

This leak accumulates across repeated failures, permanently preventing

the port from switching to AUTO mode (-EBUSY in __counter_set_mode())

and blocking the MANUAL→NONE auto-revert in rdma_counter_free(). When

the mode was NONE before the call, the MANUAL mode set by

__counter_set_mode() also leaks since the revert logic is never

reached.

Add an err_bind label between the num_counters increment and the

existing err_mode label. It decrements num_counters and mirrors the

MANUAL→NONE revert from rdma_counter_free(), ensuring the port state

is fully restored on bind failure.