CVE-2023-54299

In the Linux kernel, the following vulnerability has been resolved: usb: typec: bus: verify partner exists in typec_altmode_attention Some usb hubs will negotiate DisplayPort Alt mode with the device but will then negotiate a data role swap after entering the alt mode. The data role swap causes the device to unregister all alt modes, however the usb hub will still send Attention messages even after failing to reregister the Alt Mode. type_altmode_attention currently does not verify whether or not a device's altmode partner exists, which results in a NULL pointer error when dereferencing the typec_altmode and typec_altmode_ops belonging to the altmode partner. Verify the presence of a device's altmode partner before sending the Attention message to the Alt Mode driver.

CVSS

No CVSS.

References

Link	Resource
https://git.kernel.org/stable/c/0ad6bad31da692f8d7acacab07eabe7586239ae0
https://git.kernel.org/stable/c/0d3b5fe47938e9c451466845304a2bd74e967a80
https://git.kernel.org/stable/c/1101867a1711c27d8bbe0e83136bec47f8c1ca2a
https://git.kernel.org/stable/c/38e1f2ee82bacbbfded8f1c06794a443d038d054
https://git.kernel.org/stable/c/5f71716772b88cbe0e1788f6a38d7871aff2120b
https://git.kernel.org/stable/c/d49547950bf7f3480d6ca05fe055978e5f0d9e5b
https://git.kernel.org/stable/c/f23643306430f86e2f413ee2b986e0773e79da31

Configurations

No configuration.

History

No history.

Information

Published : 2025-12-30 13:16

Updated : 2026-06-17 06:47

NVD link : CVE-2023-54299

Mitre link : CVE-2023-54299

CVE.ORG link : CVE-2023-54299

JSON object : View

Products Affected

No product.

CWE

No CWE.

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The data role swap causes the device to unregister all alt\nmodes, however the usb hub will still send Attention messages\neven after failing to reregister the Alt Mode. type_altmode_attention\ncurrently does not verify whether or not a device's altmode partner\nexists, which results in a NULL pointer error when dereferencing\nthe typec_altmode and typec_altmode_ops belonging to the altmode\npartner.\n\nVerify the presence of a device's altmode partner before sending\nthe Attention message to the Alt Mode driver."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nusb: typec: bus: verificar que el socio existe en typec_altmode_attention\n\nAlgunos concentradores USB negociar\u00e1n el modo alternativo DisplayPort con el dispositivo, pero luego negociar\u00e1n un intercambio de rol de datos despu\u00e9s de entrar en el modo alternativo. El intercambio de rol de datos hace que el dispositivo anule el registro de todos los modos alternativos; sin embargo, el concentrador USB seguir\u00e1 enviando mensajes de Atenci\u00f3n incluso despu\u00e9s de no poder volver a registrar el Modo Alternativo. type_altmode_attention actualmente no verifica si existe o no el socio de modo alternativo de un dispositivo, lo que resulta en un error de puntero NULL al desreferenciar el typec_altmode y typec_altmode_ops pertenecientes al socio de modo alternativo.\n\nVerificar la presencia del socio de modo alternativo de un dispositivo antes de enviar el mensaje de Atenci\u00f3n al controlador del Modo Alternativo."}], "lastModified": "2026-06-17T06:47:10.947", "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}