CVE-2025-23145

{"id": "CVE-2025-23145", "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": "2025-05-01T13:15:50.343", "references": [{"url": "https://git.kernel.org/stable/c/443041deb5ef6a1289a99ed95015ec7442f141dc", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/4b2649b9717678aeb097893cc49f59311a1ecab0", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/7f9ae060ed64aef8f174c5f1ea513825b1be9af1", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/855bf0aacd51fced11ea9aa0d5101ee0febaeadb", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/8cf7fef1bb2ffea7792bcbf71ca00216cecc725d", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/b3088bd2a6790c8efff139d86d7a9d0b1305977b", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/dc81e41a307df523072186b241fa8244fecd7803", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/efd58a8dd9e7a709a90ee486a4247c923d27296f", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html", "tags": ["Mailing List"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html", "tags": ["Mailing List"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-476"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmptcp: fix NULL pointer in can_accept_new_subflow\n\nWhen testing valkey benchmark tool with MPTCP, the kernel panics in\n'mptcp_can_accept_new_subflow' because subflow_req->msk is NULL.\n\nCall trace:\n\n mptcp_can_accept_new_subflow (./net/mptcp/subflow.c:63 (discriminator 4)) (P)\n subflow_syn_recv_sock (./net/mptcp/subflow.c:854)\n tcp_check_req (./net/ipv4/tcp_minisocks.c:863)\n tcp_v4_rcv (./net/ipv4/tcp_ipv4.c:2268)\n ip_protocol_deliver_rcu (./net/ipv4/ip_input.c:207)\n ip_local_deliver_finish (./net/ipv4/ip_input.c:234)\n ip_local_deliver (./net/ipv4/ip_input.c:254)\n ip_rcv_finish (./net/ipv4/ip_input.c:449)\n ...\n\nAccording to the debug log, the same req received two SYN-ACK in a very\nshort time, very likely because the client retransmits the syn ack due\nto multiple reasons.\n\nEven if the packets are transmitted with a relevant time interval, they\ncan be processed by the server on different CPUs concurrently). The\n'subflow_req->msk' ownership is transferred to the subflow the first,\nand there will be a risk of a null pointer dereference here.\n\nThis patch fixes this issue by moving the 'subflow_req->msk' under the\n`own_req == true` conditional.\n\nNote that the !msk check in subflow_hmac_valid() can be dropped, because\nthe same check already exists under the own_req mpj branch where the\ncode has been moved to."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: mptcp: se corrige el puntero NULL en can_accept_new_subflow Al probar la herramienta de evaluaci\u00f3n comparativa valkey con MPTCP, el kernel entra en p\u00e1nico en 'mptcp_can_accept_new_subflow' porque subflow_req->msk es NULL. Rastreo de llamadas: mptcp_can_accept_new_subflow (./net/mptcp/subflow.c:63 (discriminador 4)) (P) subflow_syn_recv_sock (./net/mptcp/subflow.c:854) tcp_check_req (./net/ipv4/tcp_minisocks.c:863) tcp_v4_rcv (./net/ipv4/tcp_ipv4.c:2268) ip_protocol_deliver_rcu (./net/ipv4/ip_input.c:207) ip_local_deliver_finish (./net/ipv4/ip_input.c:234) ip_local_deliver (./net/ipv4/ip_input.c:254) ip_rcv_finish (./net/ipv4/ip_input.c:449) ... Seg\u00fan el registro de depuraci\u00f3n, la misma solicitud recibi\u00f3 dos SYN-ACK en muy poco tiempo, probablemente porque el cliente retransmite el SYN-ACK por varias razones. Incluso si los paquetes se transmiten con un intervalo de tiempo relevante, el servidor puede procesarlos en diferentes CPU simult\u00e1neamente. La propiedad de 'subflow_req->msk' se transfiere primero al subflujo, lo que conlleva el riesgo de una desreferencia de puntero nulo. Este parche corrige este problema moviendo 'subflow_req->msk' bajo la condici\u00f3n `own_req == true`. Tenga en cuenta que la comprobaci\u00f3n !msk en subflow_hmac_valid() puede omitirse, ya que ya existe en la rama own_req de mpj, donde se ha movido el c\u00f3digo."}], "lastModified": "2025-11-05T18:05:35.210", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C525983E-E824-4361-B00A-02698124F7C0", "versionEndExcluding": "5.10.237", "versionStartIncluding": "5.9"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "12331C9E-F601-4EFC-899E-369F98DCC70B", "versionEndExcluding": "5.15.181", "versionStartIncluding": "5.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "5B9ACE29-7445-4B6F-B761-6367C005E275", "versionEndExcluding": "6.1.135", "versionStartIncluding": "5.16"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "6E5947E5-45E3-462A-829B-382B3B1C61BD", "versionEndExcluding": "6.6.88", "versionStartIncluding": "6.2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "1D35A8A8-F3EC-45E6-AD37-1F154B27529D", "versionEndExcluding": "6.12.24", "versionStartIncluding": "6.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "4A475784-BF3B-4514-81EE-49C8522FB24A", "versionEndExcluding": "6.13.12", "versionStartIncluding": "6.13"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "483E2E15-2135-4EC6-AB64-16282C5EF704", "versionEndExcluding": "6.14.3", "versionStartIncluding": "6.14"}], "operator": "OR"}]}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "FA6FEEC2-9F11-4643-8827-749718254FED"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}