cve-2021-46906
Vulnerability from cvelistv5
Published
2024-02-26 17:20
Modified
2024-11-04 11:55
Severity ?
Summary
HID: usbhid: fix info leak in hid_submit_ctrl
Impacted products
LinuxLinux
LinuxLinux
Show details on NVD website


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Then, call it\\nfrom hid_submit_ctrl().\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: HID: usbhid: corrige fuga de informaci\u00f3n en hid_submit_ctrl En hid_submit_ctrl(), la forma de calcular la longitud del informe no tiene en cuenta que el tama\u00f1o del informe-\u0026gt;puede ser cero. Cuando se ejecuta el reproductor syzkaller, un informe de tama\u00f1o 0 hace que hid_submit_ctrl) calcule transfer_buffer_length como 16384. Cuando esta urb se pasa a la capa central USB, KMSAN informa una fuga de informaci\u00f3n de 16384 bytes. Para solucionar este problema, primero modifique hid_report_len() para tener en cuenta el caso de tama\u00f1o de informe cero utilizando DIV_ROUND_UP para la divisi\u00f3n. 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