| { |
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| }, |
| "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." |
| } |
| ], |
| "affected": [ |
| { |
| "product": "Linux", |
| "vendor": "Linux", |
| "defaultStatus": "unaffected", |
| "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", |
| "programFiles": [ |
| "net/mptcp/subflow.c" |
| ], |
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| ] |
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| { |
| "product": "Linux", |
| "vendor": "Linux", |
| "defaultStatus": "affected", |
| "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", |
| "programFiles": [ |
| "net/mptcp/subflow.c" |
| ], |
| "versions": [ |
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| "version": "5.9", |
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| "version": "0", |
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| }, |
| { |
| "version": "6.12.24", |
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| }, |
| { |
| "version": "6.13.12", |
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| }, |
| { |
| "version": "6.14.3", |
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| "versionType": "semver" |
| }, |
| { |
| "version": "6.15", |
| "lessThanOrEqual": "*", |
| "status": "unaffected", |
| "versionType": "original_commit_for_fix" |
| } |
| ] |
| } |
| ], |
| "cpeApplicability": [ |
| { |
| "nodes": [ |
| { |
| "operator": "OR", |
| "negate": false, |
| "cpeMatch": [ |
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| "vulnerable": true, |
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| "references": [ |
| { |
| "url": "https://git.kernel.org/stable/c/8cf7fef1bb2ffea7792bcbf71ca00216cecc725d" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/b3088bd2a6790c8efff139d86d7a9d0b1305977b" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/855bf0aacd51fced11ea9aa0d5101ee0febaeadb" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/7f9ae060ed64aef8f174c5f1ea513825b1be9af1" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/dc81e41a307df523072186b241fa8244fecd7803" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/efd58a8dd9e7a709a90ee486a4247c923d27296f" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/4b2649b9717678aeb097893cc49f59311a1ecab0" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/443041deb5ef6a1289a99ed95015ec7442f141dc" |
| } |
| ], |
| "title": "mptcp: fix NULL pointer in can_accept_new_subflow", |
| "x_generator": { |
| "engine": "bippy-1.2.0" |
| } |
| } |
| }, |
| "cveMetadata": { |
| "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038", |
| "cveID": "CVE-2025-23145", |
| "requesterUserId": "gregkh@kernel.org", |
| "serial": "1", |
| "state": "PUBLISHED" |
| }, |
| "dataType": "CVE_RECORD", |
| "dataVersion": "5.0" |
| } |
