CVE-2026-23322

{"id": "CVE-2026-23322", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.8}]}, "published": "2026-03-25T11:16:29.107", "references": [{"url": "https://git.kernel.org/stable/c/594c11d0e1d445f580898a2b8c850f2e3f099368", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/65ff5d1e4410df05edfbeb7bf2d62f7681ce1d53", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/c08ec55617cb9674a060a3392ea08391ab2a4f74", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-416"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nipmi: Fix use-after-free and list corruption on sender error\n\nThe analysis from Breno:\n\nWhen the SMI sender returns an error, smi_work() delivers an error\nresponse but then jumps back to restart without cleaning up properly:\n\n1. intf->curr_msg is not cleared, so no new message is pulled\n2. newmsg still points to the message, causing sender() to be called\n again with the same message\n3. If sender() fails again, deliver_err_response() is called with\n the same recv_msg that was already queued for delivery\n\nThis causes list_add corruption (\"list_add double add\") because the\nrecv_msg is added to the user_msgs list twice. Subsequently, the\ncorrupted list leads to use-after-free when the memory is freed and\nreused, and eventually a NULL pointer dereference when accessing\nrecv_msg->done.\n\nThe buggy sequence:\n\n sender() fails\n -> deliver_err_response(recv_msg) // recv_msg queued for delivery\n -> goto restart // curr_msg not cleared!\n sender() fails again (same message!)\n -> deliver_err_response(recv_msg) // tries to queue same recv_msg\n -> LIST CORRUPTION\n\nFix this by freeing the message and setting it to NULL on a send error.\nAlso, always free the newmsg on a send error, otherwise it will leak."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nipmi: Soluciona el uso despu\u00e9s de liberaci\u00f3n y la corrupci\u00f3n de lista en error del remitente\n\nEl an\u00e1lisis de Breno:\n\nCuando el remitente SMI devuelve un error, smi_work() entrega una respuesta de error pero luego salta de nuevo para reiniciar sin limpiar correctamente:\n\n1. intf->curr_msg no se borra, por lo que no se extrae ning\u00fan mensaje nuevo\n2. newmsg todav\u00eda apunta al mensaje, haciendo que sender() sea llamado de nuevo con el mismo mensaje\n3. Si sender() falla de nuevo, deliver_err_response() es llamado con el mismo recv_msg que ya estaba en cola para entrega\n\nEsto causa corrupci\u00f3n de list_add ('list_add doble adici\u00f3n') porque el recv_msg es a\u00f1adido a la lista user_msgs dos veces. Posteriormente, la lista corrupta lleva a un uso despu\u00e9s de liberaci\u00f3n cuando la memoria es liberada y reutilizada, y eventualmente a una desreferencia de puntero NULL al acceder a recv_msg->done.\n\nLa secuencia defectuosa:\n\n sender() falla\n -> deliver_err_response(recv_msg) // recv_msg en cola para entrega\n -> goto restart // \u00a1curr_msg no borrado!\n sender() falla de nuevo (\u00a1mismo mensaje!)\n -> deliver_err_response(recv_msg) // intenta poner en cola el mismo recv_msg\n -> CORRUPCI\u00d3N DE LISTA\n\nSoluciona esto liberando el mensaje y estableci\u00e9ndolo a NULL en un error de env\u00edo. Adem\u00e1s, siempre libera el newmsg en un error de env\u00edo, de lo contrario, se producir\u00e1 una fuga."}], "lastModified": "2026-04-23T21:05:22.450", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "07E9D8CD-82F0-4CC6-8038-BF71758D583C", "versionEndExcluding": "6.18.17", "versionStartIncluding": "6.18.1"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "69245D10-0B71-485E-80C3-A64F077004D3", "versionEndExcluding": "6.19.7", "versionStartIncluding": "6.19"}, {"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:7.0:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F253B622-8837-4245-BCE5-A7BF8FC76A16"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "4AE85AD8-4641-4E7C-A2F4-305E2CD9EE64"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F666C8D8-6538-46D4-B318-87610DE64C34"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "02259FDA-961B-47BC-AE7F-93D7EC6E90C2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "58A9FEFF-C040-420D-8F0A-BFDAAA1DF258"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc6:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "1D2315C0-D46F-4F85-9754-F9E5E11374A6"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc7:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "512EE3A8-A590-4501-9A94-5D4B268D6138"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}