CVE-2026-80936
In the Linux kernel, the following vulnerability has been resolved:
wifi: mt76: mt7925: cancel mlo_pm_work on stop
mt7925 queues mlo_pm_work with a 5 second delay during multi-link power-save setup and never cancels it on the stop path. If the device is torn down inside that window, the work outlives the teardown and its timer fires afterwards, trying to queue onto the workqueue that is already gone:
mt7921 already has its own stop callback, so add one for mt7925 that cancels the work before calling mt792x_stop(). mt7925_ops backs both the PCIe and USB drivers, so this covers both.
Detalles técnicos trazas, registros y código del informe original
workqueue: cannot queue mt7925_mlo_pm_work [mt7925_common] on wq phy0 WARNING: kernel/workqueue.c:2283 at __queue_work+0x59/0xa0, CPU#1: swapper/1/0 call_timer_fn+0x2a/0x140 __run_timers+0x203/0x330 run_timer_softirq+0x86/0xf0
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Puntuación base: 7.8
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.17%
- Percentil entre todas las CVEs puntuadas: 6
- Fecha de la puntuación: 6/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
🎯 Técnicas ATT&CK
Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.
- Explotación
T1068Exploitation for Privilege Escalationprivilege escalation75 % - Impacto principal
T1499.004Application or System Exploitationimpact65 %
Vulnerabilidad local en kernel Linux (AV:L, PR:L) sin interacción del usuario que permite DoS por uso después de liberación (use-after-free) en workqueue mt7925 durante teardown de dispositivo.
Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.
🛡️ Mitigaciones ATT&CK que cubren estas técnicas
Tecnologías afectadas (1)
⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.
Referencias
JSON original (NVD)
Mostrar
{
"id": "CVE-2026-80936",
"cveTags": [],
"metrics": {
"cvssMetricV31": [
{
"type": "Secondary",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 7.8,
"attackVector": "LOCAL",
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"integrityImpact": "HIGH",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "HIGH",
"privilegesRequired": "LOW",
"confidentialityImpact": "HIGH"
},
"impactScore": 5.9,
"exploitabilityScore": 1.8
}
]
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"affected": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"affectedData": [
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"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "276a568832577c81ec90b62dc506bbdc3781ca46",
"lessThan": "304470333b7f525b23699ea7a7aed3b40ca37ca9",
"versionType": "git"
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{
"status": "affected",
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"lessThan": "9e20da749ad229a1aa649ece528721b9652f15e1",
"versionType": "git"
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{
"status": "affected",
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"lessThan": "81faf578320df2dfc682a96baa6e85851dd68b6f",
"versionType": "git"
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{
"status": "affected",
"version": "74eb79258bfd5f2ffe6d26a09c898992b2afa1ce",
"versionType": "git"
},
{
"status": "affected",
"version": "6.14.3",
"lessThan": "6.15",
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}
],
"programFiles": [
"drivers/net/wireless/mediatek/mt76/mt7925/main.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.15"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.15",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.18.50",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.4",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3-rc1",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/net/wireless/mediatek/mt76/mt7925/main.c"
],
"defaultStatus": "affected"
}
]
}
],
"published": "2026-09-11T20:18:57.513",
"references": [
{
"url": "https://git.kernel.org/stable/c/304470333b7f525b23699ea7a7aed3b40ca37ca9",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/81faf578320df2dfc682a96baa6e85851dd68b6f",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/9e20da749ad229a1aa649ece528721b9652f15e1",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
],
"vulnStatus": "Received",
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: mt7925: cancel mlo_pm_work on stop\n\nmt7925 queues mlo_pm_work with a 5 second delay during multi-link\npower-save setup and never cancels it on the stop path. If the device is\ntorn down inside that window, the work outlives the teardown and its timer\nfires afterwards, trying to queue onto the workqueue that is already gone:\n\n workqueue: cannot queue mt7925_mlo_pm_work [mt7925_common] on wq phy0\n WARNING: kernel/workqueue.c:2283 at __queue_work+0x59/0xa0, CPU#1: swapper/1/0\n call_timer_fn+0x2a/0x140\n __run_timers+0x203/0x330\n run_timer_softirq+0x86/0xf0\n\nmt7921 already has its own stop callback, so add one for mt7925 that\ncancels the work before calling mt792x_stop(). mt7925_ops backs both the\nPCIe and USB drivers, so this covers both."
}
],
"lastModified": "2026-09-13T07:17:01.293",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}