nvme-fc: release admin tagset if init fails

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-23261
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-03-18 18:16:24 UTC
Updated2026-03-19 17:16:22 UTC
DescriptionIn 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.

Risk And Classification

EPSS: 0.000170000 probability, percentile 0.045840000 (date 2026-05-28)

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 5fe335a80548e2eda5d51fab801108b323600e95 7c54d3f5ebbc5982daaa004260242dc07ac943ea git Not specified
CNA Linux Linux affected 17c3a66d7ea2d303f783796d62f99e2e23b68c90 fa301aef50e3f3b5be6ee53457608beae5aa7a01 git Not specified
CNA Linux Linux affected ea3442efabd0aa3930c5bab73c3901ef38ef6ac3 e810b290922c535feb34bc90ab549446fe94d2a3 git Not specified
CNA Linux Linux affected ea3442efabd0aa3930c5bab73c3901ef38ef6ac3 d1877cc7270302081a315a81a0ee8331f19f95c8 git Not specified
CNA Linux Linux affected 0d1840b2dd8fe073c020c39bf8e8e89488070801 git Not specified
CNA Linux Linux affected 6.18 Not specified
CNA Linux Linux unaffected 6.18 semver Not specified
CNA Linux Linux unaffected 6.6.124 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.70 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.10 6.18.* semver Not specified
CNA Linux Linux unaffected 6.19 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/fa301aef50e3f3b5be6ee53457608beae5aa7a01 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/d1877cc7270302081a315a81a0ee8331f19f95c8 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/7c54d3f5ebbc5982daaa004260242dc07ac943ea 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/e810b290922c535feb34bc90ab549446fe94d2a3 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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