CVE-2023-52907

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

nfc: pn533: Wait for out_urb's completion in pn533_usb_send_frame()

Fix a use-after-free that occurs in hcd when in_urb sent from

pn533_usb_send_frame() is completed earlier than out_urb. Its callback

frees the skb data in pn533_send_async_complete() that is used as a

transfer buffer of out_urb. Wait before sending in_urb until the

callback of out_urb is called. To modify the callback of out_urb alone,

separate the complete function of out_urb and ack_urb.

Found by a modified version of syzkaller.

BUG: KASAN: use-after-free in dummy_timer

Call Trace:

memcpy (mm/kasan/shadow.c:65)

dummy_perform_transfer (drivers/usb/gadget/udc/dummy_hcd.c:1352)

transfer (drivers/usb/gadget/udc/dummy_hcd.c:1453)

dummy_timer (drivers/usb/gadget/udc/dummy_hcd.c:1972)

arch_static_branch (arch/x86/include/asm/jump_label.h:27)

static_key_false (include/linux/jump_label.h:207)

timer_expire_exit (include/trace/events/timer.h:127)

call_timer_fn (kernel/time/timer.c:1475)

expire_timers (kernel/time/timer.c:1519)

__run_timers (kernel/time/timer.c:1790)

run_timer_softirq (kernel/time/timer.c:1803)