CVE-2022-49471

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

rtw89: cfo: check mac_id to avoid out-of-bounds

Somehow, hardware reports incorrect mac_id and pollute memory. Check index

before we access the array.

UBSAN: array-index-out-of-bounds in rtw89/phy.c:2517:23

index 188 is out of range for type 's32 [64]'

CPU: 1 PID: 51550 Comm: irq/35-rtw89_pc Tainted: G OE

Call Trace:

<IRQ>

show_stack+0x52/0x58

dump_stack_lvl+0x4c/0x63

dump_stack+0x10/0x12

ubsan_epilogue+0x9/0x45

__ubsan_handle_out_of_bounds.cold+0x44/0x49

? __alloc_skb+0x92/0x1d0

rtw89_phy_cfo_parse+0x44/0x7f [rtw89_core]

rtw89_core_rx+0x261/0x871 [rtw89_core]

? __alloc_skb+0xee/0x1d0

rtw89_pci_napi_poll+0x3fa/0x4ea [rtw89_pci]

__napi_poll+0x33/0x1a0

net_rx_action+0x126/0x260

? __queue_work+0x217/0x4c0

__do_softirq+0xd9/0x315

? disable_irq_nosync+0x10/0x10

do_softirq.part.0+0x6d/0x90

</IRQ>

<TASK>

__local_bh_enable_ip+0x62/0x70

rtw89_pci_interrupt_threadfn+0x182/0x1a6 [rtw89_pci]

irq_thread_fn+0x28/0x60

irq_thread+0xc8/0x190

? irq_thread_fn+0x60/0x60

kthread+0x16b/0x190

? irq_thread_check_affinity+0xe0/0xe0

? set_kthread_struct+0x50/0x50

ret_from_fork+0x22/0x30

</TASK>