Description
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.
Product status
5fe335a80548e2eda5d51fab801108b323600e95 (git) before 7c54d3f5ebbc5982daaa004260242dc07ac943ea
17c3a66d7ea2d303f783796d62f99e2e23b68c90 (git) before fa301aef50e3f3b5be6ee53457608beae5aa7a01
ea3442efabd0aa3930c5bab73c3901ef38ef6ac3 (git) before e810b290922c535feb34bc90ab549446fe94d2a3
ea3442efabd0aa3930c5bab73c3901ef38ef6ac3 (git) before d1877cc7270302081a315a81a0ee8331f19f95c8
0d1840b2dd8fe073c020c39bf8e8e89488070801 (git)
6.18
Any version before 6.18
6.6.124 (semver)
6.12.70 (semver)
6.18.10 (semver)
6.19 (original_commit_for_fix)
References
git.kernel.org/...c/7c54d3f5ebbc5982daaa004260242dc07ac943ea
git.kernel.org/...c/fa301aef50e3f3b5be6ee53457608beae5aa7a01
git.kernel.org/...c/e810b290922c535feb34bc90ab549446fe94d2a3
git.kernel.org/...c/d1877cc7270302081a315a81a0ee8331f19f95c8