CVE-2025-40343

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Both functions will eventually schedule all\nremaining associations for deletion.\n\nThe current implementation checks whether an association is about to be\nremoved, but only after the work item has already been scheduled. As a\nresult, it is possible for the first scheduled work item to free all\nresources, and then for the same work item to be scheduled again for\ndeletion.\n\nBecause the association list is an RCU list, it is not possible to take\na lock and remove the list entry directly, so it cannot be looked up\nagain. Instead, a flag (terminating) must be used to determine whether\nthe association is already in the process of being deleted."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 9.8, "baseSeverity": "CRITICAL"}, "scenarios": [{"lang": "en", "value": "AV:N - The vulnerable association-deletion path is driven by FC-NVMe Link Service frames (Create/Disconnect Association) received from a remote host port by the nvmet-fc target, and by remote-controlled events such as keep-alive expiry and fabric logout; like the sibling nvmet-tcp transport, this is remote-peer protocol data, and FC/FCoE fabrics are multi-hop and extendable over FCIP rather than limited to one physical segment.\nAC:L - The attacker controls both racers \u2014 it can issue duplicate Disconnect Association LSs concurrently, choose a short KATO so the keep-alive timeout fires on demand, or drop its fabric login \u2014 and the window is wide because the first work item sits in `synchronize_rcu()` plus `flush_workqueue()` with `WORK_STRUCT_PENDING` already cleared; the sequence can be retried indefinitely across many associations.\nPR:N - `nvmet_fc_ls_create_association()` and `nvmet_fc_ls_disconnect()` perform no host-NQN or allowed-host validation \u2014 the NQN check only occurs later in the NVMe fabrics Connect command \u2014 so an unauthenticated host port on the fabric can create and tear down associations; FC zoning is network access control, not a privilege of the vulnerable component.\nUI:N - The attacking host issues the LS frames and controls the timing entirely on its own; no action by an administrator or any other user is required.\nS:U - The use-after-free and double free corrupt kernel slab memory within the same kernel security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - After `kfree(assoc)` the re-queued work re-enters `nvmet_fc_target_assoc_free()`, which reads `association_id`, `hostport`, `rcv_disconn` and `queues[]` from the reclaimed slab object and transmits a Disconnect LS/LS response built from that memory back to the remote host, leaking attacker-reclaimable kernel heap contents and giving attacker-directed reads.\nI:H - The `work_struct` lives inside the freed allocation, so the workqueue writes into reclaimed memory and dispatches through a `work->func` taken from it, and the second `kref_put()` causes a refcount underflow and double free of `assoc`, `hostport` and the queue objects \u2014 a control-flow-hijack and arbitrary-free primitive.\nA:H - Even without weaponization, the second execution performs `list_del_rcu` and `spin_lock` on freed memory and double-frees the association, reliably producing list corruption, a KASAN splat, or a kernel panic on the storage target."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/nvme/target/fc.c"], "versions": [{"version": "a07b4970f464f13640e28e16dad6cfa33647cc99", "lessThan": "2f4852db87e25d4e226b25cb6f652fef9504360e", "status": "affected", "versionType": "git"}, {"version": "a07b4970f464f13640e28e16dad6cfa33647cc99", "lessThan": "85e2ce1920cb511d57aae59f0df6ff85b28bf04d", "status": "affected", "versionType": "git"}, {"version": "a07b4970f464f13640e28e16dad6cfa33647cc99", "lessThan": "601ed47b2363c24d948d7bac0c23abc8bd459570", "status": "affected", "versionType": "git"}, {"version": "a07b4970f464f13640e28e16dad6cfa33647cc99", "lessThan": "04d17540ef51e2c291eb863ca87fd332259b2d40", "status": "affected", "versionType": "git"}, {"version": "a07b4970f464f13640e28e16dad6cfa33647cc99", "lessThan": "c09ac9a63fc3aaf4670ad7b5e4f5afd764424154", "status": "affected", "versionType": "git"}, {"version": "a07b4970f464f13640e28e16dad6cfa33647cc99", "lessThan": "f2537be4f8421f6495edfa0bc284d722f253841d", "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/target/fc.c"], "versions": [{"version": "4.8", "status": "affected"}, {"version": "0", "lessThan": "4.8", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.197", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.159", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.117", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.58", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.17.8", "lessThanOrEqual": "6.17.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18", "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": "4.8", "versionEndExcluding": "5.15.197"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.8", "versionEndExcluding": "6.1.159"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.8", "versionEndExcluding": "6.6.117"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.8", "versionEndExcluding": "6.12.58"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.8", "versionEndExcluding": "6.17.8"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.8", "versionEndExcluding": "6.18"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/2f4852db87e25d4e226b25cb6f652fef9504360e"}, {"url": "https://git.kernel.org/stable/c/85e2ce1920cb511d57aae59f0df6ff85b28bf04d"}, {"url": "https://git.kernel.org/stable/c/601ed47b2363c24d948d7bac0c23abc8bd459570"}, {"url": "https://git.kernel.org/stable/c/04d17540ef51e2c291eb863ca87fd332259b2d40"}, {"url": "https://git.kernel.org/stable/c/c09ac9a63fc3aaf4670ad7b5e4f5afd764424154"}, {"url": "https://git.kernel.org/stable/c/f2537be4f8421f6495edfa0bc284d722f253841d"}], "title": "nvmet-fc: avoid scheduling association deletion twice", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2025-40343", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-10-15T21:59:32.826461Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-15T22:02:46.366Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2025-40343", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-10-15T21:59:32.826461Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-15T21:59:33.783Z"}}], "cna": {"title": "nvmet-fc: avoid scheduling association deletion twice", "metrics": [{"cvssV3_1": {"version": "3.1", "baseScore": 9.8, "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}, "scenarios": [{"lang": "en", "value": "AV:N - The vulnerable association-deletion path is driven by FC-NVMe Link Service frames (Create/Disconnect Association) received from a remote host port by the nvmet-fc target, and by remote-controlled events such as keep-alive expiry and fabric logout; like the sibling nvmet-tcp transport, this is remote-peer protocol data, and FC/FCoE fabrics are multi-hop and extendable over FCIP rather than limited to one physical segment.\nAC:L - The attacker controls both racers \u2014 it can issue duplicate Disconnect Association LSs concurrently, choose a short KATO so the keep-alive timeout fires on demand, or drop its fabric login \u2014 and the window is wide because the first work item sits in `synchronize_rcu()` plus `flush_workqueue()` with `WORK_STRUCT_PENDING` already cleared; the sequence can be retried indefinitely across many associations.\nPR:N - `nvmet_fc_ls_create_association()` and `nvmet_fc_ls_disconnect()` perform no host-NQN or allowed-host validation \u2014 the NQN check only occurs later in the NVMe fabrics Connect command \u2014 so an unauthenticated host port on the fabric can create and tear down associations; FC zoning is network access control, not a privilege of the vulnerable component.\nUI:N - The attacking host issues the LS frames and controls the timing entirely on its own; no action by an administrator or any other user is required.\nS:U - The use-after-free and double free corrupt kernel slab memory within the same kernel security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - After `kfree(assoc)` the re-queued work re-enters `nvmet_fc_target_assoc_free()`, which reads `association_id`, `hostport`, `rcv_disconn` and `queues[]` from the reclaimed slab object and transmits a Disconnect LS/LS response built from that memory back to the remote host, leaking attacker-reclaimable kernel heap contents and giving attacker-directed reads.\nI:H - The `work_struct` lives inside the freed allocation, so the workqueue writes into reclaimed memory and dispatches through a `work->func` taken from it, and the second `kref_put()` causes a refcount underflow and double free of `assoc`, `hostport` and the queue objects \u2014 a control-flow-hijack and arbitrary-free primitive.\nA:H - Even without weaponization, the second execution performs `list_del_rcu` and `spin_lock` on freed memory and double-frees the association, reliably producing list corruption, a KASAN splat, or a kernel panic on the storage target."}]}], "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "a07b4970f464f13640e28e16dad6cfa33647cc99", "lessThan": "2f4852db87e25d4e226b25cb6f652fef9504360e", "versionType": "git"}, {"status": "affected", "version": "a07b4970f464f13640e28e16dad6cfa33647cc99", "lessThan": "85e2ce1920cb511d57aae59f0df6ff85b28bf04d", "versionType": "git"}, {"status": "affected", "version": "a07b4970f464f13640e28e16dad6cfa33647cc99", "lessThan": "601ed47b2363c24d948d7bac0c23abc8bd459570", "versionType": "git"}, {"status": "affected", "version": "a07b4970f464f13640e28e16dad6cfa33647cc99", "lessThan": "04d17540ef51e2c291eb863ca87fd332259b2d40", "versionType": "git"}, {"status": "affected", "version": "a07b4970f464f13640e28e16dad6cfa33647cc99", "lessThan": "c09ac9a63fc3aaf4670ad7b5e4f5afd764424154", "versionType": "git"}, {"status": "affected", "version": "a07b4970f464f13640e28e16dad6cfa33647cc99", "lessThan": "f2537be4f8421f6495edfa0bc284d722f253841d", "versionType": "git"}], "programFiles": ["drivers/nvme/target/fc.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "4.8"}, {"status": "unaffected", "version": "0", "lessThan": "4.8", "versionType": "semver"}, {"status": "unaffected", "version": "5.15.197", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.159", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.117", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.58", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.17.8", "versionType": "semver", "lessThanOrEqual": "6.17.*"}, {"status": "unaffected", "version": "6.18", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/nvme/target/fc.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/2f4852db87e25d4e226b25cb6f652fef9504360e"}, {"url": "https://git.kernel.org/stable/c/85e2ce1920cb511d57aae59f0df6ff85b28bf04d"}, {"url": "https://git.kernel.org/stable/c/601ed47b2363c24d948d7bac0c23abc8bd459570"}, {"url": "https://git.kernel.org/stable/c/04d17540ef51e2c291eb863ca87fd332259b2d40"}, {"url": "https://git.kernel.org/stable/c/c09ac9a63fc3aaf4670ad7b5e4f5afd764424154"}, {"url": "https://git.kernel.org/stable/c/f2537be4f8421f6495edfa0bc284d722f253841d"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnvmet-fc: avoid scheduling association deletion twice\n\nWhen forcefully shutting down a port via the configfs interface,\nnvmet_port_subsys_drop_link() first calls nvmet_port_del_ctrls() and\nthen nvmet_disable_port(). Both functions will eventually schedule all\nremaining associations for deletion.\n\nThe current implementation checks whether an association is about to be\nremoved, but only after the work item has already been scheduled. As a\nresult, it is possible for the first scheduled work item to free all\nresources, and then for the same work item to be scheduled again for\ndeletion.\n\nBecause the association list is an RCU list, it is not possible to take\na lock and remove the list entry directly, so it cannot be looked up\nagain. Instead, a flag (terminating) must be used to determine whether\nthe association is already in the process of being deleted."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.197", "versionStartIncluding": "4.8"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1.159", "versionStartIncluding": "4.8"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6.117", "versionStartIncluding": "4.8"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.12.58", "versionStartIncluding": "4.8"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.17.8", "versionStartIncluding": "4.8"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.18", "versionStartIncluding": "4.8"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T12:09:45.994Z"}}}, "cveMetadata": {"cveId": "CVE-2025-40343", "state": "PUBLISHED", "dateUpdated": "2026-10-15T22:02:46.366Z", "dateReserved": "2025-04-16T07:20:57.187Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2025-12-09T04:10:00.973Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/nvme/target/fc.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "2f4852db87e25d4e226b25cb6f652fef9504360e", "status": "affected", "version": "a07b4970f464f13640e28e16dad6cfa33647cc99", "versionType": "git"}, {"lessThan": "85e2ce1920cb511d57aae59f0df6ff85b28bf04d", "status": "affected", "version": "a07b4970f464f13640e28e16dad6cfa33647cc99", "versionType": "git"}, {"lessThan": "601ed47b2363c24d948d7bac0c23abc8bd459570", "status": "affected", "version": "a07b4970f464f13640e28e16dad6cfa33647cc99", "versionType": "git"}, {"lessThan": "04d17540ef51e2c291eb863ca87fd332259b2d40", "status": "affected", "version": "a07b4970f464f13640e28e16dad6cfa33647cc99", "versionType": "git"}, {"lessThan": "c09ac9a63fc3aaf4670ad7b5e4f5afd764424154", "status": "affected", "version": "a07b4970f464f13640e28e16dad6cfa33647cc99", "versionType": "git"}, {"lessThan": "f2537be4f8421f6495edfa0bc284d722f253841d", "status": "affected", "version": "a07b4970f464f13640e28e16dad6cfa33647cc99", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/nvme/target/fc.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "4.8"}, {"lessThan": "4.8", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.197", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.159", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.117", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.58", "versionType": "semver"}, {"lessThanOrEqual": "6.17.*", "status": "unaffected", "version": "6.17.8", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "6.18", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnvmet-fc: avoid scheduling association deletion twice\n\nWhen forcefully shutting down a port via the configfs interface,\nnvmet_port_subsys_drop_link() first calls nvmet_port_del_ctrls() and\nthen nvmet_disable_port(). Both functions will eventually schedule all\nremaining associations for deletion.\n\nThe current implementation checks whether an association is about to be\nremoved, but only after the work item has already been scheduled. As a\nresult, it is possible for the first scheduled work item to free all\nresources, and then for the same work item to be scheduled again for\ndeletion.\n\nBecause the association list is an RCU list, it is not possible to take\na lock and remove the list entry directly, so it cannot be looked up\nagain. Instead, a flag (terminating) must be used to determine whether\nthe association is already in the process of being deleted."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nnvmet-fc: evitar programar la eliminaci\u00f3n de asociaciones dos veces\n\nAl apagar forzosamente un puerto a trav\u00e9s de la interfaz configfs, nvmet_port_subsys_drop_link() primero llama a nvmet_port_del_ctrls() y luego a nvmet_disable_port(). Ambas funciones eventualmente programar\u00e1n todas las asociaciones restantes para su eliminaci\u00f3n.\n\nLa implementaci\u00f3n actual verifica si una asociaci\u00f3n est\u00e1 a punto de ser eliminada, pero solo despu\u00e9s de que el elemento de trabajo ya ha sido programado. Como resultado, es posible que el primer elemento de trabajo programado libere todos los recursos, y luego que el mismo elemento de trabajo sea programado nuevamente para su eliminaci\u00f3n.\n\nDebido a que la lista de asociaciones es una lista RCU, no es posible tomar un bloqueo y eliminar la entrada de la lista directamente, por lo que no se puede buscar de nuevo. En su lugar, una bandera (terminating) debe usarse para determinar si la asociaci\u00f3n ya est\u00e1 en proceso de ser eliminada."}], "id": "CVE-2025-40343", "lastModified": "2026-10-15T22:19:08.927", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-40343", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-10-15T21:59:32.826461Z", "version": "2.0.3"}}]}, "published": "2025-12-09T16:17:44.650", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/04d17540ef51e2c291eb863ca87fd332259b2d40"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/2f4852db87e25d4e226b25cb6f652fef9504360e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/601ed47b2363c24d948d7bac0c23abc8bd459570"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/85e2ce1920cb511d57aae59f0df6ff85b28bf04d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/c09ac9a63fc3aaf4670ad7b5e4f5afd764424154"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f2537be4f8421f6495edfa0bc284d722f253841d"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Deferred"}

{"bugzilla": {"description": "kernel: nvmet-fc: avoid scheduling association deletion twice", "id": "2420418", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2420418"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "details": ["No description is available for this CVE."], "mitigation": {"lang": "en:us", "value": "To mitigate this issue, prevent the nvmet_fc module from being loaded if NVMe over Fibre Channel target functionality is not required. See https://access.redhat.com/solutions/41278 for instructions on how to blacklist a kernel module."}, "name": "CVE-2025-40343", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "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": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-12-09T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-40343\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-40343\nhttps://lore.kernel.org/linux-cve-announce/2025120912-CVE-2025-40343-dbb0@gregkh/T"], "statement": "This vulnerability affects systems configured as NVMe over Fibre Channel targets. Exploitation requires local access with permissions to manage the nvmet-fc configfs interface. The race condition occurs during port shutdown operations.", "threat_severity": "Moderate"}

{}