CVE-2024-49937
Estado: ModificadaMedia (5.5)—
In the Linux kernel, the following vulnerability has been resolved:
wifi: cfg80211: Set correct chandef when starting CAC
When starting CAC in a mode other than AP mode, it return a "WARNING: CPU: 0 PID: 63 at cfg80211_chandef_dfs_usable+0x20/0xaf [cfg80211]" caused by the chandef.chan being null at the end of CAC.
Solution: Ensure the channel definition is set for the different modes when starting CAC to avoid getting a NULL 'chan' at the end of CAC.
[shorten subject, remove OCB, reorder cases to match previous list]
Detalles técnicos trazas, registros y código del informe original
Call Trace: ? show_regs.part.0+0x14/0x16 ? __warn+0x67/0xc0 ? cfg80211_chandef_dfs_usable+0x20/0xaf [cfg80211] ? report_bug+0xa7/0x130 ? exc_overflow+0x30/0x30 ? handle_bug+0x27/0x50 ? exc_invalid_op+0x18/0x60 ? handle_exception+0xf6/0xf6 ? exc_overflow+0x30/0x30 ? cfg80211_chandef_dfs_usable+0x20/0xaf [cfg80211] ? exc_overflow+0x30/0x30 ? cfg80211_chandef_dfs_usable+0x20/0xaf [cfg80211] ? regulatory_propagate_dfs_state.cold+0x1b/0x4c [cfg80211] ? cfg80211_propagate_cac_done_wk+0x1a/0x30 [cfg80211] ? process_one_work+0x165/0x280 ? worker_thread+0x120/0x3f0 ? kthread+0xc2/0xf0 ? process_one_work+0x280/0x280 ? kthread_complete_and_exit+0x20/0x20 ? ret_from_fork+0x19/0x24
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Puntuación base: 5.5
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.24%
- Percentil entre todas las CVEs puntuadas: 13
- Fecha de la puntuación: 5/10/2026
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).
Tecnologías afectadas (1)
CWE
- NVD-CWE-noinfo
Referencias
- https://git.kernel.org/stable/c/04053e55dd50741cf6c59b9bbaa4238218c05c70
- https://git.kernel.org/stable/c/20361712880396e44ce80aaeec2d93d182035651
- https://git.kernel.org/stable/c/95f32191e50b75e0f75fae1bb925cdf51d8df0a3
- https://git.kernel.org/stable/c/c628026563f4ea9e0413dd4b69429e4a1db240b1
- https://git.kernel.org/stable/c/f4dbfda159e43d49b43003cc3c2914751939035f
- https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
JSON original (NVD)
Mostrar
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: cfg80211: Set correct chandef when starting CAC\n\nWhen starting CAC in a mode other than AP mode, it return a\n\"WARNING: CPU: 0 PID: 63 at cfg80211_chandef_dfs_usable+0x20/0xaf [cfg80211]\"\ncaused by the chandef.chan being null at the end of CAC.\n\nSolution: Ensure the channel definition is set for the different modes\nwhen starting CAC to avoid getting a NULL 'chan' at the end of CAC.\n\n Call Trace:\n ? show_regs.part.0+0x14/0x16\n ? __warn+0x67/0xc0\n ? cfg80211_chandef_dfs_usable+0x20/0xaf [cfg80211]\n ? report_bug+0xa7/0x130\n ? exc_overflow+0x30/0x30\n ? handle_bug+0x27/0x50\n ? exc_invalid_op+0x18/0x60\n ? handle_exception+0xf6/0xf6\n ? exc_overflow+0x30/0x30\n ? cfg80211_chandef_dfs_usable+0x20/0xaf [cfg80211]\n ? exc_overflow+0x30/0x30\n ? cfg80211_chandef_dfs_usable+0x20/0xaf [cfg80211]\n ? regulatory_propagate_dfs_state.cold+0x1b/0x4c [cfg80211]\n ? cfg80211_propagate_cac_done_wk+0x1a/0x30 [cfg80211]\n ? process_one_work+0x165/0x280\n ? worker_thread+0x120/0x3f0\n ? kthread+0xc2/0xf0\n ? process_one_work+0x280/0x280\n ? kthread_complete_and_exit+0x20/0x20\n ? ret_from_fork+0x19/0x24\n\n[shorten subject, remove OCB, reorder cases to match previous list]"
},
{
"lang": "es",
"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: wifi: cfg80211: Establecer chandef correcto al iniciar CAC Al iniciar CAC en un modo distinto del modo AP, devuelve un \"ADVERTENCIA: CPU: 0 PID: 63 en cfg80211_chandef_dfs_usable+0x20/0xaf [cfg80211]\" causado por chandef.chan que es nulo al final de CAC. Solución: Asegúrese de que la definición del canal esté configurada para los diferentes modos al iniciar CAC para evitar obtener un 'chan' NULL al final de CAC. Seguimiento de llamadas: ? show_regs.part.0+0x14/0x16 ? __warn+0x67/0xc0 ? cfg80211_chandef_dfs_usable+0x20/0xaf [cfg80211] ? report_bug+0xa7/0x130 ? exc_overflow+0x30/0x30 ? handle_bug+0x27/0x50 ? exc_invalid_op+0x18/0x60 ? handle_exception+0xf6/0xf6 ? exc_overflow+0x30/0x30 ? cfg80211_chandef_dfs_usable+0x20/0xaf [cfg80211] ? exc_overflow+0x30/0x30 ? cfg80211_chandef_dfs_usable+0x20/0xaf [cfg80211] ? regulatory_propagate_dfs_state.cold+0x1b/0x4c [cfg80211] ? cfg80211_propagate_cac_done_wk+0x1a/0x30 [cfg80211] ? process_one_work+0x165/0x280 ? worker_thread+0x120/0x3f0 ? kthread+0xc2/0xf0 ? process_one_work+0x280/0x280 ? kthread_complete_and_exit+0x20/0x20 ? ret_from_fork+0x19/0x24 [acortar asunto, eliminar OCB, reordenar casos para que coincidan con la lista anterior]"
}
],
"lastModified": "2026-06-17T08:00:46.357",
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