CVE-2025-23145

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2025-23145", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-01-11T14:28:41.512Z", "datePublished": "2025-05-01T12:55:34.622Z", "dateUpdated": "2026-10-15T21:51:58.841Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:57:02.928Z"}, "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."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "baseScore": 7.5, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:N - The bug is triggered entirely by received TCP packets processed in `tcp_v4_rcv \u2192 tcp_check_req \u2192 subflow_syn_recv_sock`; a remote peer sending duplicate MP_JOIN third ACKs to an MPTCP listening socket reaches the vulnerable code with no local access.\nAC:L - The attacker creates both sides of the race by transmitting multiple duplicate third ACKs for the same request_sock, and can force concurrent multi-CPU processing via IP fragmentation or IPv6 flow-label variation that changes RSS steering for an otherwise identical 4-tuple; the attempt is freely repeatable across many connections, and the race was hit accidentally by a normal benchmark.\nPR:N - No authentication or privilege is needed \u2014 the attacker simply opens their own MPTCP connection to the server, which yields the token and both keys required to produce a valid MP_JOIN HMAC, and MPTCP is enabled by default when compiled in.\nUI:N - The entire sequence is driven by attacker-sent packets against a listening socket; no action by any local user or administrator is required.\nS:U - The NULL dereference and its consequences are confined to the kernel of the targeted host, with no crossing into another security authority such as a hypervisor or IOMMU domain.\nC:N - The dereference is of a NULL pointer at a small fixed offset (`sk->sk_state`), which faults immediately; no attacker-controlled address is read and no memory contents are disclosed.\nI:N - The bug is a read of an unmapped low address with no write primitive and no attacker-controlled pointer value, so no kernel memory or data can be modified.\nA:H - The fault occurs in network RX softirq context, so `oops_end()` escalates it to `panic(\"Fatal exception in interrupt\")` \u2014 a guaranteed, remotely and repeatedly triggerable full-system crash."}]}], "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"], "versions": [{"version": "9466a1ccebbe54ac57fb8a89c2b4b854826546a8", "lessThan": "8cf7fef1bb2ffea7792bcbf71ca00216cecc725d", "status": "affected", "versionType": "git"}, {"version": "9466a1ccebbe54ac57fb8a89c2b4b854826546a8", "lessThan": "b3088bd2a6790c8efff139d86d7a9d0b1305977b", "status": "affected", "versionType": "git"}, {"version": "9466a1ccebbe54ac57fb8a89c2b4b854826546a8", "lessThan": "855bf0aacd51fced11ea9aa0d5101ee0febaeadb", "status": "affected", "versionType": "git"}, {"version": "9466a1ccebbe54ac57fb8a89c2b4b854826546a8", "lessThan": "7f9ae060ed64aef8f174c5f1ea513825b1be9af1", "status": "affected", "versionType": "git"}, {"version": "9466a1ccebbe54ac57fb8a89c2b4b854826546a8", "lessThan": "dc81e41a307df523072186b241fa8244fecd7803", "status": "affected", "versionType": "git"}, {"version": "9466a1ccebbe54ac57fb8a89c2b4b854826546a8", "lessThan": "efd58a8dd9e7a709a90ee486a4247c923d27296f", "status": "affected", "versionType": "git"}, {"version": "9466a1ccebbe54ac57fb8a89c2b4b854826546a8", "lessThan": "4b2649b9717678aeb097893cc49f59311a1ecab0", "status": "affected", "versionType": "git"}, {"version": "9466a1ccebbe54ac57fb8a89c2b4b854826546a8", "lessThan": "443041deb5ef6a1289a99ed95015ec7442f141dc", "status": "affected", "versionType": "git"}]}, {"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": [{"version": "5.9", "status": "affected"}, {"version": "0", "lessThan": "5.9", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.237", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.181", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.135", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.88", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.24", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.13.12", "lessThanOrEqual": "6.13.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.14.3", "lessThanOrEqual": "6.14.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.15", "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": "5.9", "versionEndExcluding": "5.10.237"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.9", "versionEndExcluding": "5.15.181"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.9", "versionEndExcluding": "6.1.135"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.9", "versionEndExcluding": "6.6.88"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.9", "versionEndExcluding": "6.12.24"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.9", "versionEndExcluding": "6.13.12"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.9", "versionEndExcluding": "6.14.3"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.9", "versionEndExcluding": "6.15"}]}]}], "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"}}, "adp": [{"title": "CVE Program Container", "references": [{"url": "https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html"}, {"url": "https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html"}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2025-11-03T19:42:35.316Z"}}, {"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2025-23145", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-10-15T21:44:47.460002Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-15T21:51:58.841Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CVE Program Container", "references": [{"url": "https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html"}, {"url": "https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html"}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2025-11-03T19:42:35.316Z"}}, {"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2025-23145", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-10-15T21:44:47.460002Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-15T21:44:47.944Z"}}], "cna": {"title": "mptcp: fix NULL pointer in can_accept_new_subflow", "metrics": [{"cvssV3_1": {"version": "3.1", "baseScore": 7.5, "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}, "scenarios": [{"lang": "en", "value": "AV:N - The bug is triggered entirely by received TCP packets processed in `tcp_v4_rcv \u2192 tcp_check_req \u2192 subflow_syn_recv_sock`; a remote peer sending duplicate MP_JOIN third ACKs to an MPTCP listening socket reaches the vulnerable code with no local access.\nAC:L - The attacker creates both sides of the race by transmitting multiple duplicate third ACKs for the same request_sock, and can force concurrent multi-CPU processing via IP fragmentation or IPv6 flow-label variation that changes RSS steering for an otherwise identical 4-tuple; the attempt is freely repeatable across many connections, and the race was hit accidentally by a normal benchmark.\nPR:N - No authentication or privilege is needed \u2014 the attacker simply opens their own MPTCP connection to the server, which yields the token and both keys required to produce a valid MP_JOIN HMAC, and MPTCP is enabled by default when compiled in.\nUI:N - The entire sequence is driven by attacker-sent packets against a listening socket; no action by any local user or administrator is required.\nS:U - The NULL dereference and its consequences are confined to the kernel of the targeted host, with no crossing into another security authority such as a hypervisor or IOMMU domain.\nC:N - The dereference is of a NULL pointer at a small fixed offset (`sk->sk_state`), which faults immediately; no attacker-controlled address is read and no memory contents are disclosed.\nI:N - The bug is a read of an unmapped low address with no write primitive and no attacker-controlled pointer value, so no kernel memory or data can be modified.\nA:H - The fault occurs in network RX softirq context, so `oops_end()` escalates it to `panic(\"Fatal exception in interrupt\")` \u2014 a guaranteed, remotely and repeatedly triggerable full-system crash."}]}], "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "9466a1ccebbe54ac57fb8a89c2b4b854826546a8", "lessThan": "8cf7fef1bb2ffea7792bcbf71ca00216cecc725d", "versionType": "git"}, {"status": "affected", "version": "9466a1ccebbe54ac57fb8a89c2b4b854826546a8", "lessThan": "b3088bd2a6790c8efff139d86d7a9d0b1305977b", "versionType": "git"}, {"status": "affected", "version": "9466a1ccebbe54ac57fb8a89c2b4b854826546a8", "lessThan": "855bf0aacd51fced11ea9aa0d5101ee0febaeadb", "versionType": "git"}, {"status": "affected", "version": "9466a1ccebbe54ac57fb8a89c2b4b854826546a8", "lessThan": "7f9ae060ed64aef8f174c5f1ea513825b1be9af1", "versionType": "git"}, {"status": "affected", "version": "9466a1ccebbe54ac57fb8a89c2b4b854826546a8", "lessThan": "dc81e41a307df523072186b241fa8244fecd7803", "versionType": "git"}, {"status": "affected", "version": "9466a1ccebbe54ac57fb8a89c2b4b854826546a8", "lessThan": "efd58a8dd9e7a709a90ee486a4247c923d27296f", "versionType": "git"}, {"status": "affected", "version": "9466a1ccebbe54ac57fb8a89c2b4b854826546a8", "lessThan": "4b2649b9717678aeb097893cc49f59311a1ecab0", "versionType": "git"}, {"status": "affected", "version": "9466a1ccebbe54ac57fb8a89c2b4b854826546a8", "lessThan": "443041deb5ef6a1289a99ed95015ec7442f141dc", "versionType": "git"}], "programFiles": ["net/mptcp/subflow.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "5.9"}, {"status": "unaffected", "version": "0", "lessThan": "5.9", "versionType": "semver"}, {"status": "unaffected", "version": "5.10.237", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.181", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.135", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.88", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.24", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.13.12", "versionType": "semver", "lessThanOrEqual": "6.13.*"}, {"status": "unaffected", "version": "6.14.3", "versionType": "semver", "lessThanOrEqual": "6.14.*"}, {"status": "unaffected", "version": "6.15", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["net/mptcp/subflow.c"], "defaultStatus": "affected"}], "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"}], "x_generator": {"engine": "bippy-1.2.0"}, "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."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.10.237", "versionStartIncluding": "5.9"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.181", "versionStartIncluding": "5.9"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1.135", "versionStartIncluding": "5.9"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6.88", "versionStartIncluding": "5.9"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.12.24", "versionStartIncluding": "5.9"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.13.12", "versionStartIncluding": "5.9"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.14.3", "versionStartIncluding": "5.9"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.15", "versionStartIncluding": "5.9"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:57:02.928Z"}}}, "cveMetadata": {"cveId": "CVE-2025-23145", "state": "PUBLISHED", "dateUpdated": "2026-10-15T21:51:58.841Z", "dateReserved": "2025-01-11T14:28:41.512Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2025-05-01T12:55:34.622Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["net/mptcp/subflow.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "8cf7fef1bb2ffea7792bcbf71ca00216cecc725d", "status": "affected", "version": "9466a1ccebbe54ac57fb8a89c2b4b854826546a8", "versionType": "git"}, {"lessThan": "b3088bd2a6790c8efff139d86d7a9d0b1305977b", "status": "affected", "version": "9466a1ccebbe54ac57fb8a89c2b4b854826546a8", "versionType": "git"}, {"lessThan": "855bf0aacd51fced11ea9aa0d5101ee0febaeadb", "status": "affected", "version": "9466a1ccebbe54ac57fb8a89c2b4b854826546a8", "versionType": "git"}, {"lessThan": "7f9ae060ed64aef8f174c5f1ea513825b1be9af1", "status": "affected", "version": "9466a1ccebbe54ac57fb8a89c2b4b854826546a8", "versionType": "git"}, {"lessThan": "dc81e41a307df523072186b241fa8244fecd7803", "status": "affected", "version": "9466a1ccebbe54ac57fb8a89c2b4b854826546a8", "versionType": "git"}, {"lessThan": "efd58a8dd9e7a709a90ee486a4247c923d27296f", "status": "affected", "version": "9466a1ccebbe54ac57fb8a89c2b4b854826546a8", "versionType": "git"}, {"lessThan": "4b2649b9717678aeb097893cc49f59311a1ecab0", "status": "affected", "version": "9466a1ccebbe54ac57fb8a89c2b4b854826546a8", "versionType": "git"}, {"lessThan": "443041deb5ef6a1289a99ed95015ec7442f141dc", "status": "affected", "version": "9466a1ccebbe54ac57fb8a89c2b4b854826546a8", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["net/mptcp/subflow.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.9"}, {"lessThan": "5.9", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.237", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.181", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.135", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.88", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.24", "versionType": "semver"}, {"lessThanOrEqual": "6.13.*", "status": "unaffected", "version": "6.13.12", "versionType": "semver"}, {"lessThanOrEqual": "6.14.*", "status": "unaffected", "version": "6.14.3", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "6.15", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "C525983E-E824-4361-B00A-02698124F7C0", "versionEndExcluding": "5.10.237", "versionStartIncluding": "5.9", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "12331C9E-F601-4EFC-899E-369F98DCC70B", "versionEndExcluding": "5.15.181", "versionStartIncluding": "5.11", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "5B9ACE29-7445-4B6F-B761-6367C005E275", "versionEndExcluding": "6.1.135", "versionStartIncluding": "5.16", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "6E5947E5-45E3-462A-829B-382B3B1C61BD", "versionEndExcluding": "6.6.88", "versionStartIncluding": "6.2", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "1D35A8A8-F3EC-45E6-AD37-1F154B27529D", "versionEndExcluding": "6.12.24", "versionStartIncluding": "6.7", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "4A475784-BF3B-4514-81EE-49C8522FB24A", "versionEndExcluding": "6.13.12", "versionStartIncluding": "6.13", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "483E2E15-2135-4EC6-AB64-16282C5EF704", "versionEndExcluding": "6.14.3", "versionStartIncluding": "6.14", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*", "matchCriteriaId": "FA6FEEC2-9F11-4643-8827-749718254FED", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "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."}], "id": "CVE-2025-23145", "lastModified": "2026-10-15T22:18:16.510", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-23145", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-10-15T21:44:47.460002Z", "version": "2.0.3"}}]}, "published": "2025-05-01T13:15:50.343", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/443041deb5ef6a1289a99ed95015ec7442f141dc"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/4b2649b9717678aeb097893cc49f59311a1ecab0"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/7f9ae060ed64aef8f174c5f1ea513825b1be9af1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/855bf0aacd51fced11ea9aa0d5101ee0febaeadb"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/8cf7fef1bb2ffea7792bcbf71ca00216cecc725d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/b3088bd2a6790c8efff139d86d7a9d0b1305977b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/dc81e41a307df523072186b241fa8244fecd7803"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/efd58a8dd9e7a709a90ee486a4247c923d27296f"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List"], "url": "https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List"], "url": "https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-476"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: mptcp: fix NULL pointer in can_accept_new_subflow", "id": "2363348", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2363348"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-476", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nmptcp: fix NULL pointer in can_accept_new_subflow\nWhen testing valkey benchmark tool with MPTCP, the kernel panics in\n'mptcp_can_accept_new_subflow' because subflow_req->msk is NULL.\nCall trace:\nmptcp_can_accept_new_subflow (./net/mptcp/subflow.c:63 (discriminator 4)) (P)\nsubflow_syn_recv_sock (./net/mptcp/subflow.c:854)\ntcp_check_req (./net/ipv4/tcp_minisocks.c:863)\ntcp_v4_rcv (./net/ipv4/tcp_ipv4.c:2268)\nip_protocol_deliver_rcu (./net/ipv4/ip_input.c:207)\nip_local_deliver_finish (./net/ipv4/ip_input.c:234)\nip_local_deliver (./net/ipv4/ip_input.c:254)\nip_rcv_finish (./net/ipv4/ip_input.c:449)\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.\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.\nThis patch fixes this issue by moving the 'subflow_req->msk' under the\n`own_req == true` conditional.\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."], "name": "CVE-2025-23145", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "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": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-05-01T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-23145\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-23145\nhttps://lore.kernel.org/linux-cve-announce/2025050126-CVE-2025-23145-4a18@gregkh/T"], "threat_severity": "Moderate"}

{}