CVE-2025-40140
Full vulnerability record from the local CVENow database.
Description
In the Linux kernel, the following vulnerability has been resolved: net: usb: Remove disruptive netif_wake_queue in rtl8150_set_multicast syzbot reported WARNING in rtl8150_start_xmit/usb_submit_urb. This is the sequence of events that leads to the warning: rtl8150_start_xmit() { netif_stop_queue(); usb_submit_urb(dev->tx_urb); } rtl8150_set_multicast() { netif_stop_queue(); netif_wake_queue(); <-- wakes up TX queue before URB is done } rtl8150_start_xmit() { netif_stop_queue(); usb_submit_urb(dev->tx_urb); <-- double submission } rtl8150_set_multicast being the ndo_set_rx_mode callback should not be calling netif_stop_queue and notif_start_queue as these handle TX queue synchronization. The net core function dev_set_rx_mode handles the synchronization for rtl8150_set_multicast making it safe to remove these locks.
Severity
HIGH
CVSS score
8.8
(v3.1)
Vulnerability status
Deferred
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2025-11-12 11:15:43.790000
Last modified
2026-10-19 21:10:00.160000
View original CVE JSON
{
"id": "CVE-2025-40140",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"published": "2025-11-12T11:15:43.790",
"lastModified": "2026-10-19T21:10:00.160",
"vulnStatus": "Deferred",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: usb: Remove disruptive netif_wake_queue in rtl8150_set_multicast\n\nsyzbot reported WARNING in rtl8150_start_xmit/usb_submit_urb.\nThis is the sequence of events that leads to the warning:\n\nrtl8150_start_xmit() {\n\tnetif_stop_queue();\n\tusb_submit_urb(dev->tx_urb);\n}\n\nrtl8150_set_multicast() {\n\tnetif_stop_queue();\n\tnetif_wake_queue();\t\t<-- wakes up TX queue before URB is done\n}\n\nrtl8150_start_xmit() {\n\tnetif_stop_queue();\n\tusb_submit_urb(dev->tx_urb);\t<-- double submission\n}\n\nrtl8150_set_multicast being the ndo_set_rx_mode callback should not be\ncalling netif_stop_queue and notif_start_queue as these handle\nTX queue synchronization.\n\nThe net core function dev_set_rx_mode handles the synchronization\nfor rtl8150_set_multicast making it safe to remove these locks."
},
{
"lang": "es",
"value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nnet: usb: Eliminar la disruptiva netif_wake_queue en rtl8150_set_multicast\n\nsyzbot informó de una ADVERTENCIA en rtl8150_start_xmit/usb_submit_urb.\nEsta es la secuencia de eventos que conduce a la advertencia:\n\nrtl8150_start_xmit() {\n\tnetif_stop_queue();\n\tusb_submit_urb(dev->tx_urb);\n}\n\nrtl8150_set_multicast() {\n\tnetif_stop_queue();\n\tnetif_wake_queue();\t\t<-- activa la cola TX antes de que el URB termine\n}\n\nrtl8150_start_xmit() {\n\tnetif_stop_queue();\n\tusb_submit_urb(dev->tx_urb);\t<-- doble envío\n}\n\nrtl8150_set_multicast, al ser la función de callback ndo_set_rx_mode, no debería estar llamando a netif_stop_queue y notif_start_queue, puesto que estas gestionan la sincronización de la cola TX.\n\nLa función del núcleo de red dev_set_rx_mode gestiona la sincronización para rtl8150_set_multicast, haciendo que sea seguro eliminar estos bloqueos."
}
],
"affected": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"affectedData": [
{
"vendor": "Linux",
"product": "Linux",
"defaultStatus": "unaffected",
"programFiles": [
"drivers/net/usb/rtl8150.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"versions": [
{
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"lessThan": "cce3c0e21cdd15bcba5c35d3af1700186de8f187",
"versionType": "git",
"status": "affected"
},
{
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"versionType": "git",
"status": "affected"
},
{
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"lessThan": "54f8ef1a970a8376e5846ed90854decf7c00555d",
"versionType": "git",
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{
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"status": "affected"
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{
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"status": "affected"
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{
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"versionType": "git",
"status": "affected"
},
{
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"versionType": "git",
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{
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]
},
{
"vendor": "Linux",
"product": "Linux",
"defaultStatus": "affected",
"programFiles": [
"drivers/net/usb/rtl8150.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"versions": [
{
"version": "2.6.12",
"status": "affected"
},
{
"version": "0",
"lessThan": "2.6.12",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "5.4.301",
"lessThanOrEqual": "5.4.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "5.10.246",
"lessThanOrEqual": "5.10.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "5.15.195",
"lessThanOrEqual": "5.15.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.1.156",
"lessThanOrEqual": "6.1.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.6.112",
"lessThanOrEqual": "6.6.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.12.53",
"lessThanOrEqual": "6.12.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.17.3",
"lessThanOrEqual": "6.17.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.18",
"lessThanOrEqual": "*",
"versionType": "original_commit_for_fix",
"status": "unaffected"
}
]
}
]
}
],
"metrics": {
"cvssMetricV31": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"type": "Secondary",
"cvssData": {
"version": "3.1",
"vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"baseScore": 8.8,
"baseSeverity": "HIGH",
"attackVector": "ADJACENT_NETWORK",
"attackComplexity": "LOW",
"privilegesRequired": "NONE",
"userInteraction": "NONE",
"scope": "UNCHANGED",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"availabilityImpact": "HIGH"
},
"exploitabilityScore": 2.8,
"impactScore": 5.9
}
]
},
"references": [
{
"url": "https://git.kernel.org/stable/c/114e05344763a102a8844efd96ec06ba99293ccd",
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"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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{
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{
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{
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}