CVE-2026-23261

{"id": "CVE-2026-23261", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.8}]}, "published": "2026-03-18T18:16:24.623", "references": [{"url": "https://git.kernel.org/stable/c/7c54d3f5ebbc5982daaa004260242dc07ac943ea", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/d1877cc7270302081a315a81a0ee8331f19f95c8", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/e810b290922c535feb34bc90ab549446fe94d2a3", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/fa301aef50e3f3b5be6ee53457608beae5aa7a01", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-401"}]}], "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."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nnvme-fc: liberar el conjunto de etiquetas de administraci\u00f3n si la inicializaci\u00f3n falla\n\nnvme_fabrics crea un controlador NVMe/FC en la siguiente ruta:\n\n nvmf_dev_write()\n -> nvmf_create_ctrl()\n -> nvme_fc_create_ctrl()\n -> nvme_fc_init_ctrl()\n\nnvme_fc_init_ctrl() asigna los recursos blk-mq de administraci\u00f3n justo despu\u00e9s de que nvme_add_ctrl() tenga \u00e9xito. Si alguno de los pasos subsiguientes falla (cambiar el estado del controlador, programar el trabajo de conexi\u00f3n, etc.), saltamos a la ruta fail_ctrl, que desmantela las referencias del controlador pero nunca libera la cola/conjunto de etiquetas de administraci\u00f3n. Las asignaciones blk-mq filtradas coinciden con el informe kmemleak visto durante blktests nvme/fc.\n\nVerificar ctrl->ctrl.admin_tagset en la ruta fail_ctrl y llamar a nvme_remove_admin_tag_set() cuando est\u00e9 establecido para que todas las asignaciones de la cola de administraci\u00f3n sean recuperadas cada vez que la configuraci\u00f3n del controlador se aborte."}], "lastModified": "2026-05-22T20:55:03.250", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "1D668FD4-32B2-4105-8C08-3C1B33A00A13", "versionEndExcluding": "6.6.124", "versionStartIncluding": "6.6.118"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "DE749901-19D4-4591-B0D4-EED3C4B72504", "versionEndExcluding": "6.12.70", "versionStartIncluding": "6.12.60"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "AC4D9A16-72F2-4CA3-A8F5-80DD12FD7626", "versionEndExcluding": "6.18", "versionStartIncluding": "6.17.10"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F337A30A-7E98-4F11-9B36-CA6427410816", "versionEndExcluding": "6.18.10", "versionStartIncluding": "6.18.1"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.18:-:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "DCE57113-2223-4308-A0F2-5E6ECFBB3C23"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.18:rc7:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "38C4D89F-9A13-4D29-8645-C9785C142C07"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.19:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "17B67AA7-40D6-4AFA-8459-F200F3D7CFD1"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.19:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C47E4CC9-C826-4FA9-B014-7FE3D9B318B2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.19:rc3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F71D92C0-C023-48BD-B3B6-70B638EEE298"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.19:rc4:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "13580667-0A98-40CC-B29F-D12790B91BDB"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.19:rc5:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "CAD1FED7-CF48-47BF-AC7D-7B6FA3C065FC"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.19:rc7:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F5DC0CA6-F0AF-4DDF-A882-3DADB9A886A7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.19:rc8:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "EB5B7DFC-C36B-45D8-922C-877569FDDF43"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}