GHSA-J54V-PXGX-56HG
Vulnerability from github – Published: 2026-03-18 18:31 – Updated: 2026-03-18 18:31In 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.
{
"affected": [],
"aliases": [
"CVE-2026-23261"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-03-18T18:16:24Z",
"severity": null
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnvme-fc: release admin tagset if init fails\n\nnvme_fabrics creates an NVMe/FC controller in following path:\n\n nvmf_dev_write()\n -\u003e nvmf_create_ctrl()\n -\u003e nvme_fc_create_ctrl()\n -\u003e nvme_fc_init_ctrl()\n\nnvme_fc_init_ctrl() allocates the admin blk-mq resources right after\nnvme_add_ctrl() succeeds. If any of the subsequent steps fail (changing\nthe controller state, scheduling connect work, etc.), we jump to the\nfail_ctrl path, which tears down the controller references but never\nfrees the admin queue/tag set. The leaked blk-mq allocations match the\nkmemleak report seen during blktests nvme/fc.\n\nCheck ctrl-\u003ectrl.admin_tagset in the fail_ctrl path and call\nnvme_remove_admin_tag_set() when it is set so that all admin queue\nallocations are reclaimed whenever controller setup aborts.",
"id": "GHSA-j54v-pxgx-56hg",
"modified": "2026-03-18T18:31:18Z",
"published": "2026-03-18T18:31:18Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-23261"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/7c54d3f5ebbc5982daaa004260242dc07ac943ea"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/b134dead095bc5a58fa2b98b90ae93428cb4b328"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/d1877cc7270302081a315a81a0ee8331f19f95c8"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/e810b290922c535feb34bc90ab549446fe94d2a3"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/fa301aef50e3f3b5be6ee53457608beae5aa7a01"
}
],
"schema_version": "1.4.0",
"severity": []
}
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