338 lines
16 KiB
JSON
338 lines
16 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-46137",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2026-05-13T15:03:33.100Z",
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"datePublished": "2026-05-28T09:35:53.628Z",
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"dateUpdated": "2026-10-19T19:36:51.963Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-08-05T12:29:59.255Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmptcp: pm: ADD_ADDR rtx: fix potential data-race\n\nThis mptcp_pm_add_timer() helper is executed as a timer callback in\nsoftirq context. To avoid any data races, the socket lock needs to be\nheld with bh_lock_sock().\n\nIf the socket is in use, retry again soon after, similar to what is done\nwith the keepalive timer."
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}
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],
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"metrics": [
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{
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"cvssV3_1": {
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"version": "3.1",
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
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"baseScore": 9.8,
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"baseSeverity": "CRITICAL"
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},
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"scenarios": [
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{
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"lang": "en",
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"value": "AV:N - The vulnerable timer is part of the MPTCP network stack (net/mptcp); it is kept firing by a remote peer withholding ADD_ADDR echoes, and the racing conn_list modifications are driven by remote MP_JOIN/RST traffic, so an unauthenticated remote peer can reach and trigger it over the network.\nAC:L - The remote attacker controls both sides of the race — it drives the ADD_ADDR retransmit timer (by not echoing) and the concurrent subflow add/remove (MP_JOIN and RST), and can repeat this across many subflows/connections to reliably hit the unlocked conn_list iteration.\nPR:N - Exploitation only requires being a remote MPTCP peer of a server that advertises addresses; no credentials or privileges on the target are needed.\nUI:N - No action by any local user is required; the attacker drives the entire condition via network protocol behavior.\nS:U - The corruption stays within the kernel's own security authority; no crossing of a VM/sandbox/IOMMU boundary.\nC:H - The softirq timer iterates conn_list and reads subflow/ssk fields concurrently with subflow free, a use-after-free read of freed (potentially reallocated) memory, which per kernel scoring gives high confidentiality impact.\nI:H - Racing list_for_each_entry against list_del plus subflow free is a use-after-free/list-corruption condition; once the freed object is reallocated it can be leveraged for memory-integrity compromise, scored high for UAF-class races.\nA:H - The list-traversal-vs-deletion race can follow poisoned/dangling list pointers or dereference a freed subflow, causing a kernel oops/panic."
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}
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]
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}
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],
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"version": "5.10.259",
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"lessThanOrEqual": "6.12.*",
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},
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{
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"version": "6.18.30",
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"lessThanOrEqual": "6.18.*",
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},
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"version": "7.0.7",
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"lessThanOrEqual": "7.0.*",
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"status": "unaffected",
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{
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"version": "7.1",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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"url": "https://git.kernel.org/stable/c/5cd6e0ad79d2615264f63929f8b457ad97ae550d"
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}
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],
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"title": "mptcp: pm: ADD_ADDR rtx: fix potential data-race",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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},
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"adp": [
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{
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"providerMetadata": {
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"orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
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"shortName": "siemens-SADP",
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"dateUpdated": "2026-10-15T01:20:46.817Z"
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},
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"affected": [
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{
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"vendor": "Siemens",
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"product": "SIMATIC S7-1500 TM MFP - GNU/Linux subsystem",
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"versions": [
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"status": "affected",
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{
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"type": "ssvc",
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"content": {
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"id": "CVE-2026-46137",
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"role": "CISA Coordinator",
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"options": [
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{
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"Exploitation": "none"
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},
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"Automatable": "yes"
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"Technical Impact": "total"
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}
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],
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"version": "2.0.3",
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"timestamp": "2026-10-16T15:20:17.146601Z"
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}
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}
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],
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"descriptions": [
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{
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"lang": "en",
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"type": "CWE",
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"cweId": "CWE-362",
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"description": "CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')"
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}
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]
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}
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} |