cbcvebase.
CVE-2024-46760
published 2024-09-18

CVE-2024-46760: In the Linux kernel, the following vulnerability has been resolved: wifi: rtw88: usb: schedule rx work after everything is set up Right now it's possible to…

PriorityP420medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.23%
14.5th percentile
In the Linux kernel, the following vulnerability has been resolved: wifi: rtw88: usb: schedule rx work after everything is set up Right now it's possible to hit NULL pointer dereference in rtw_rx_fill_rx_status on hw object and/or its fields because initialization routine can start getting USB replies before rtw_dev is fully setup. The stack trace looks like this: rtw_rx_fill_rx_status rtw8821c_query_rx_desc rtw_usb_rx_handler ... queue_work rtw_usb_read_port_complete ... usb_submit_urb rtw_usb_rx_resubmit rtw_usb_init_rx rtw_usb_probe So while we do the async stuff rtw_usb_probe continues and calls rtw_register_hw, which does all kinds of initialization (e.g. via ieee80211_register_hw) that rtw_rx_fill_rx_status relies on. Fix this by moving the first usb_submit_urb after everything is set up. For me, this bug manifested as: [ 8.893177] rtw_8821cu 1-1:1.2: band wrong, packet dropped [ 8.910904] rtw_8821cu 1-1:1.2: hw->conf.chandef.chan NULL in rtw_rx_fill_rx_status because I'm using Larry's backport of rtw88 driver with the NULL checks in rtw_rx_fill_rx_status.

Affected

17 ranges
VendorProductVersion rangeFixed in
debianlinux< linux 6.10.11-1 (forky)linux 6.10.11-1 (forky)
linuxlinux
linuxlinux>= e3037485c68ec1a299ff41160d8fedbd4abc29b9 < c83d464b82a8ad62ec9077637f75d73fe955635ac83d464b82a8ad62ec9077637f75d73fe955635a
linuxlinux>= e3037485c68ec1a299ff41160d8fedbd4abc29b9 < 25eaef533bf3ccc6fee5067aac16f41f280e343e25eaef533bf3ccc6fee5067aac16f41f280e343e
linuxlinux>= e3037485c68ec1a299ff41160d8fedbd4abc29b9 < adc539784c98a7cc602cbf557debfc2e7b9be8b3adc539784c98a7cc602cbf557debfc2e7b9be8b3
linuxlinux_kernel< 6.6.516.6.51
linuxlinux_kernel>= 0 < 6.10.11-16.10.11-1
linuxlinux_kernel>= 0 < 6.10.11-16.10.11-1
linuxlinux_kernel>= 0 < 6.8.0-50.516.8.0-50.51
linuxlinux_kernel>= 6.7 < 6.10.106.10.10
msrcazl3_kernel_6.6.47.1-1_on_azure_linux_3.0
msrcazl3_kernel_6.6.51.1-5_on_azure_linux_3.0
msrcazure_linux_3.0_arm
msrcazure_linux_3.0_x64
msrccbl2_kernel_5.15.186.1-1_on_cbl_mariner_2.0
msrccbl2_kernel_5.15.200.1-1_on_cbl_mariner_2.0
msrccbl2_kernel_5.15.202.1-1_on_cbl_mariner_2.0

CVSS provenance

nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv5.5MEDIUM
vendor_debian5.5MEDIUM
vendor_msrc5.5MEDIUM
vendor_redhat5.5MEDIUM
vendor_ubuntu5.5MEDIUM
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