CVE-2026-23261

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> nvme-fc: release admin tagset if init fails<br /> <br /> nvme_fabrics creates an NVMe/FC controller in following path:<br /> <br /> nvmf_dev_write()<br /> -&gt; nvmf_create_ctrl()<br /> -&gt; nvme_fc_create_ctrl()<br /> -&gt; nvme_fc_init_ctrl()<br /> <br /> nvme_fc_init_ctrl() allocates the admin blk-mq resources right after<br /> nvme_add_ctrl() succeeds. If any of the subsequent steps fail (changing<br /> the controller state, scheduling connect work, etc.), we jump to the<br /> fail_ctrl path, which tears down the controller references but never<br /> frees the admin queue/tag set. The leaked blk-mq allocations match the<br /> kmemleak report seen during blktests nvme/fc.<br /> <br /> Check ctrl-&gt;ctrl.admin_tagset in the fail_ctrl path and call<br /> nvme_remove_admin_tag_set() when it is set so that all admin queue<br /> allocations are reclaimed whenever controller setup aborts.