CVE-2022-48926

In the Linux kernel, the following vulnerability has been resolved:

usb: gadget: rndis: add spinlock for rndis response list

Theres no lock for rndis response list. It could cause list corruption if therere two different list_add at the same time like below. Its better to add in rndis_add_response / rndis_free_response / rndis_get_next_response to prevent any race condition on response list.

[ 361.894299] [1: irq/191-dwc3:16979] list_add corruption. next->prev should be prev (ffffff80651764d0), but was ffffff883dc36f80. (next=ffffff80651764d0).

[ 361.904380] [1: irq/191-dwc3:16979] Call trace: [ 361.904391] [1: irq/191-dwc3:16979] __list_add_valid+0x74/0x90 [ 361.904401] [1: irq/191-dwc3:16979] rndis_msg_parser+0x168/0x8c0 [ 361.904409] [1: irq/191-dwc3:16979] rndis_command_complete+0x24/0x84 [ 361.904417] [1: irq/191-dwc3:16979] usb_gadget_giveback_request+0x20/0xe4 [ 361.904426] [1: irq/191-dwc3:16979] dwc3_gadget_giveback+0x44/0x60 [ 361.904434] [1: irq/191-dwc3:16979] dwc3_ep0_complete_data+0x1e8/0x3a0 [ 361.904442] [1: irq/191-dwc3:16979] dwc3_ep0_interrupt+0x29c/0x3dc [ 361.904450] [1: irq/191-dwc3:16979] dwc3_process_event_entry+0x78/0x6cc [ 361.904457] [1: irq/191-dwc3:16979] dwc3_process_event_buf+0xa0/0x1ec [ 361.904465] [1: irq/191-dwc3:16979] dwc3_thread_interrupt+0x34/0x5c

Affected Software

References

• https://git.kernel.org/stable/c/33222d1571d7ce8c1c75f6b488f38968fa93d2d9
• https://git.kernel.org/stable/c/4ce247af3f30078d5b97554f1ae6200a0222c15a
• https://git.kernel.org/stable/c/669c2b178956718407af5631ccbc61c24413f038
• https://git.kernel.org/stable/c/9ab652d41deab49848673c3dadb57ad338485376
• https://git.kernel.org/stable/c/9f5d8ba538ef81cd86ea587ca3f8c77e26bea405
• https://git.kernel.org/stable/c/9f688aadede6b862a0a898792b1a35421c93636f
• https://git.kernel.org/stable/c/aaaba1c86d04dac8e49bf508b492f81506257da3
• https://git.kernel.org/stable/c/da514063440b53a27309a4528b726f92c3cfe56f