{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-23261", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-01-13T15:37:45.990Z", "datePublished": "2026-03-18T17:41:07.478Z", "dateUpdated": "2026-03-19T16:01:07.303Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-03-19T16:01:07.303Z"}, "descriptions": [{"lang": "en", "value": "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 -> nvmf_create_ctrl()\n -> nvme_fc_create_ctrl()\n -> 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->ctrl.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."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/nvme/host/fc.c"], "versions": [{"version": "5fe335a80548e2eda5d51fab801108b323600e95", "lessThan": "7c54d3f5ebbc5982daaa004260242dc07ac943ea", "status": "affected", "versionType": "git"}, {"version": "17c3a66d7ea2d303f783796d62f99e2e23b68c90", "lessThan": "fa301aef50e3f3b5be6ee53457608beae5aa7a01", "status": "affected", "versionType": "git"}, {"version": "ea3442efabd0aa3930c5bab73c3901ef38ef6ac3", "lessThan": "e810b290922c535feb34bc90ab549446fe94d2a3", "status": "affected", "versionType": "git"}, {"version": "ea3442efabd0aa3930c5bab73c3901ef38ef6ac3", "lessThan": "d1877cc7270302081a315a81a0ee8331f19f95c8", "status": "affected", "versionType": "git"}, {"version": "0d1840b2dd8fe073c020c39bf8e8e89488070801", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/nvme/host/fc.c"], "versions": [{"version": "6.18", "status": "affected"}, {"version": "0", "lessThan": "6.18", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.124", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.70", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.10", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.19", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6.118", "versionEndExcluding": "6.6.124"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.12.60", "versionEndExcluding": "6.12.70"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.18", "versionEndExcluding": "6.18.10"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.18", "versionEndExcluding": "6.19"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.17.10"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/7c54d3f5ebbc5982daaa004260242dc07ac943ea"}, {"url": "https://git.kernel.org/stable/c/fa301aef50e3f3b5be6ee53457608beae5aa7a01"}, {"url": "https://git.kernel.org/stable/c/e810b290922c535feb34bc90ab549446fe94d2a3"}, {"url": "https://git.kernel.org/stable/c/d1877cc7270302081a315a81a0ee8331f19f95c8"}], "title": "nvme-fc: release admin tagset if init fails", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "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 -> nvmf_create_ctrl()\n -> nvme_fc_create_ctrl()\n -> 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->ctrl.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": "CVE-2026-23261", "lastModified": "2026-03-19T17:16:22.743", "metrics": {}, "published": "2026-03-18T18:16:24.623", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/7c54d3f5ebbc5982daaa004260242dc07ac943ea"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d1877cc7270302081a315a81a0ee8331f19f95c8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e810b290922c535feb34bc90ab549446fe94d2a3"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/fa301aef50e3f3b5be6ee53457608beae5aa7a01"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{"bugzilla": {"description": "kernel: nvme-fc: release admin tagset if init fails", "id": "2448686", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2448686"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "details": ["No description is available for this CVE."], "name": "CVE-2026-23261", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-03-18T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-23261\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-23261\nhttps://lore.kernel.org/linux-cve-announce/2026031819-CVE-2026-23261-f757@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,b134dead095bc5a58fa2b98b90ae93428cb4b328)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,7c54d3f5ebbc5982daaa004260242dc07ac943ea)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,fa301aef50e3f3b5be6ee53457608beae5aa7a01)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,e810b290922c535feb34bc90ab549446fe94d2a3)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,d1877cc7270302081a315a81a0ee8331f19f95c8)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.1.163,6.1.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.6.124,6.6.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.12.70,6.12.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.18.10,6.18.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.19,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-03-19T08:55:58.280630+00:00", "updated": "2026-03-19T08:55:58.280739+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}