Copyright © 2012 Red Hat, Inc. All rights reserved. Moderate 2026-07-25T00:00:00 kernel: nvme: target: rdma: fix ndev refcount leak on queue connect 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H CWE-911

In the Linux kernel, the following vulnerability has been resolved: nvme: target: rdma: fix ndev refcount leak on queue connect nvmet_rdma_queue_connect() calls nvmet_rdma_find_get_device() which acquires a reference on the returned ndev via kref_get(). On the path where the host queue backlog is exceeded and the function returns NVME_SC_CONNECT_CTRL_BUSY, reference of ndev is not released, leaking the kref. Fix this by adding a goto to the existing put_device label before the early return.

A flaw was found in the NVMe over RDMA (nvmet_rdma) target in the Linux kernel. When a host queue backlog is exceeded during a connection attempt, a reference count (kref) is not properly released. This oversight can lead to a resource exhaustion vulnerability, potentially allowing a remote attacker to cause a Denial of Service (DoS) by depleting system resources.

Red Hat Enterprise Linux 10 Affected kernel Red Hat Enterprise Linux 6 Not affected kernel Red Hat Enterprise Linux 7 Not affected kernel Red Hat Enterprise Linux 7 Not affected kernel-rt Red Hat Enterprise Linux 8 Not affected kernel Red Hat Enterprise Linux 8 Not affected kernel-rt Red Hat Enterprise Linux 9 Affected kernel Red Hat Enterprise Linux 9 Affected kernel-rt Red Hat Hardened Images Not affected erlang27 https://www.cve.org/CVERecord?id=CVE-2026-64321 https://nvd.nist.gov/vuln/detail/CVE-2026-64321 https://lore.kernel.org/linux-cve-announce/2026072511-CVE-2026-64321-4f63@gregkh/T