2024-12-08 03:06:42 +00:00

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{
"id": "CVE-2024-47713",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"published": "2024-10-21T12:15:07.717",
"lastModified": "2024-11-08T16:15:26.370",
"vulnStatus": "Modified",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: use two-phase skb reclamation in ieee80211_do_stop()\n\nSince '__dev_queue_xmit()' should be called with interrupts enabled,\nthe following backtrace:\n\nieee80211_do_stop()\n ...\n spin_lock_irqsave(&local->queue_stop_reason_lock, flags)\n ...\n ieee80211_free_txskb()\n ieee80211_report_used_skb()\n ieee80211_report_ack_skb()\n cfg80211_mgmt_tx_status_ext()\n nl80211_frame_tx_status()\n genlmsg_multicast_netns()\n genlmsg_multicast_netns_filtered()\n nlmsg_multicast_filtered()\n\t netlink_broadcast_filtered()\n\t do_one_broadcast()\n\t netlink_broadcast_deliver()\n\t __netlink_sendskb()\n\t netlink_deliver_tap()\n\t __netlink_deliver_tap_skb()\n\t dev_queue_xmit()\n\t __dev_queue_xmit() ; with IRQS disabled\n ...\n spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags)\n\nissues the warning (as reported by syzbot reproducer):\n\nWARNING: CPU: 2 PID: 5128 at kernel/softirq.c:362 __local_bh_enable_ip+0xc3/0x120\n\nFix this by implementing a two-phase skb reclamation in\n'ieee80211_do_stop()', where actual work is performed\noutside of a section with interrupts disabled."
},
{
"lang": "es",
"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: wifi: mac80211: usar recuperaci\u00f3n skb de dos fases en ieee80211_do_stop() Dado que '__dev_queue_xmit()' se debe llamar con las interrupciones habilitadas, se realiza el siguiente seguimiento: ieee80211_do_stop() ... spin_lock_irqsave(&local->queue_stop_reason_lock, flags) ... ieee80211_free_txskb() ieee80211_report_used_skb() ieee80211_report_ack_skb() cfg80211_mgmt_tx_status_ext() nl80211_frame_tx_status() genlmsg_multicast_netns() genlmsg_multicast_netns_filtered() con IRQS deshabilitado ... spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags) emite la advertencia (seg\u00fan lo informado por el reproductor syzbot): ADVERTENCIA: CPU: 2 PID: 5128 en kernel/softirq.c:362 __local_bh_enable_ip+0xc3/0x120 Solucione esto implementando una recuperaci\u00f3n de skb de dos fases en 'ieee80211_do_stop()', donde el trabajo real se realiza fuera de una secci\u00f3n con las interrupciones deshabilitadas."
}
],
"metrics": {
"cvssMetricV31": [
{
"source": "nvd@nist.gov",
"type": "Primary",
"cvssData": {
"version": "3.1",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"baseScore": 5.5,
"baseSeverity": "MEDIUM",
"attackVector": "LOCAL",
"attackComplexity": "LOW",
"privilegesRequired": "LOW",
"userInteraction": "NONE",
"scope": "UNCHANGED",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"availabilityImpact": "HIGH"
},
"exploitabilityScore": 1.8,
"impactScore": 3.6
}
]
},
"weaknesses": [
{
"source": "nvd@nist.gov",
"type": "Primary",
"description": [
{
"lang": "en",
"value": "NVD-CWE-noinfo"
}
]
}
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