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CVE-2026-23261 PUBLISHED

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

EPSS 0.02% · 6.1th percentile

Risk Scores

EPSS Score
0.02%
6.1th percentile

Affected Products

VendorProductVersions
LinuxLinux5fe335a80548e2eda5d51fab801108b323600e95, 17c3a66d7ea2d303f783796d62f99e2e23b68c90, ea3442efabd0aa3930c5bab73c3901ef38ef6ac3
linuxlinux_kernel6.6.118, 6.12.60, 6.18

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